Free — Hellgate London Cd Key

Searching for “Hellgate: London CD key free” is a time machine—not to 2007 gaming, but to the dark ages of PC DRM. Back when you needed a unique alphanumeric code just to prove you weren’t a thief, only to have the servers vanish two years later.

Don’t dig up the grave. Go to Steam. Download Hellgate: London (the 2018 rebuild). It’s janky, it’s dated, and the subway tunnels are still boring—but it’s legally free, virus-free, and actually works.

TL;DR: The only working “free CD key” for Hellgate: London is the one that doesn’t exist. The developers already gave you the game for $0. Stop trying to break into a house that has no doors.

Finding a free, functional CD key for the original 2007 version of Hellgate: London

is difficult because the original Flagship Studios servers are no longer active. However, since the game is now essentially abandonware or managed by fan projects, there are alternative ways to play:

London 2038 Project: This is the most popular community-run revival. To play, you generally need the original 2007 game files. Community members often note that the London 2038 forum doesn't track specific serial numbers for their private server, so any valid-format key found online may work for the installation process.

Steam Version: A version of Hellgate: London is available on Steam, but it is based on the later "Global" version by HanbitSoft, which many fans consider inferior to the original.

Physical Copies: You can still find original DVDs with keys on sites like eBay or Amazon for a relatively low cost.

Draft Paper: The Rise, Fall, and Fan-Led Resurrection of Hellgate: London

IntroductionHellgate: London, released in 2007 by Flagship Studios, was envisioned as a revolutionary "looter-shooter" that combined the action-RPG depth of Diablo with first-person perspective gameplay. Despite its high pedigree—led by former Blizzard North creators—the game suffered a tumultuous launch and eventual server shutdown, leaving a dedicated fanbase in its wake.

The Vision and Early StrugglesFlagship Studios aimed to create a persistent online world with procedural environments and deep character customization. However, technical bugs, a confusing subscription model, and the collapse of the studio in 2008 led to the original servers being shuttered shortly after release. The intellectual property was subsequently acquired by HanbitSoft, leading to a modified "Global" version that shifted toward a free-to-play MMO model.

The Community Revival: London 2038The most significant chapter in the game's modern history is the London 2038 project. This fan-run initiative restored the original Flagship Studios multiplayer experience through a private server. By reverse-engineering the game's netcode, the community preserved the "true" version of the game that had been lost when the official servers died. This project demonstrates the power of digital preservation led by passionate volunteers.

ConclusionThe story of Hellgate: London is a cautionary tale of overambition in the early days of "Games as a Service," but also a testament to community resilience. While the official industry moved on, the fans ensured that the gates of London remained open, proving that a game's legacy often belongs as much to its players as its creators.

HELLGATE: London Γενικές συζητήσεις - Steam Community

Now, the user is asking about getting a free CD key. That raises some legal and ethical questions. I need to address the importance of purchasing software legally and respecting intellectual property rights. Maybe there are legal ways to obtain the key, like promotions or giveaways by the publisher. But I should also warn against piracy and using cracked keys, as that's illegal and risks malware.

I should outline how to check for free keys safely. Maybe through the game's official website, their Facebook page, or trusted platforms like Steam or Origin if the game is available there. Also, mentioning that since Midway went bankrupt, the game's current status might affect availability. Maybe third-party retailers have old stock or promotions.

I need to include the historical context of the game, its reception, and why it's sought after. Then move into the methods of obtaining a CD key, both legal and unethical. Emphasize the risks of the latter. Also, maybe mention alternatives like playing on emulator with ROMs if the user is interested in retro games, but clarify that downloading pirated content is still illegal.

I should structure the report with sections: Introduction, Background of Hellgate: London, Legal Sources for Free CD Keys, Risks of Unethical Methods, Alternatives and Conclusion. Make sure to provide accurate information about the game's development and current availability. Maybe check if Steam or other platforms have the game available at a discount or if it's region-locked.

Deep Report: "Hellgate: London CD Key Free"

1. Introduction
"Hellgate: London" is a first-person action RPG developed by Midway Games and released in 2007. Set during World War I, the game merges steampunk and horror elements, featuring demons, airships, and trench warfare. Despite its ambitious premise, the game received mixed reviews and commercial failure, leading to Midway Games' financial struggles. Today, interest in "Hellgate: London" persists among retro gaming enthusiasts, sparking queries about obtaining free CD keys. This report explores the feasibility, legality, and risks of acquiring a "Hellgate: London" CD key for free, while emphasizing ethical and legal considerations.

2. Background of Hellgate: London

3. Legal Sources for Free CD Keys
If you seek a free CD key for "Hellgate: London," only official or authorized methods are valid. Here’s how to explore them:

A. Promotional Campaigns:

B. Retailer Incentives:

C. Public Domain & Emulation:

4. Risks of Unethical/Illegal Methods
Avoiding Piracy:

Ethical Concerns:

5. Alternatives for Playing "Hellgate: London"

6. Conclusion
Obtaining a "Hellgate: London" CD key for free through legal means is possible via promotional deals, discounted purchases, or bundle sites. However, no official source offers permanent free access. Users must avoid scams, piracy, and unethical practices to protect their devices and uphold industry ethics. For true retro enthusiasts, the game’s legacy persists as a cautionary tale of creative ambition and mismanagement.

Final Note: Always verify the authenticity of promotional sources and prioritize ethical support for developers, even for discontinued titles.

Report Date: [Insert Date]
Author: [Your Name/Team Name]

This report adheres to intellectual property guidelines and discourages illegal activity. For questions about legal access, contact the publisher or authorized retailers.

Hellgate: London is a cult-classic action RPG that blended fast-paced shooting with deep looting mechanics. While its official servers have long been dark, many players are still searching for a way to relive the demon-slaying glory of post-apocalyptic London. If you are looking for a Hellgate: London CD key for free, there are several things you need to know about the current state of the game and where you can actually play it today. The History of Hellgate: London

Released in 2007 by Flagship Studios—a team comprised of former Blizzard North developers—Hellgate: London was ahead of its time. It introduced a "looter-shooter" loop years before franchises like Destiny or Borderlands became mainstream. Unfortunately, financial troubles led to the shutdown of the original global servers in 2009. Since then, the rights have hopped between different companies, leading to various versions of the game. Can You Get a Free CD Key? The short answer is: You generally don't need one anymore.

Because the original retail version of the game is no longer supported by an official master server, a standard retail CD key won't grant you access to online play or modern updates. Here is the current landscape for finding and playing the game:

🚀 Steam VersionIn 2018, T3 Entertainment released a version of Hellgate: London on Steam. This version is based on the "Hellgate: Tokyo" expansion. While it is not free-to-play, it is frequently on sale for a few dollars. Searching for "free keys" for this version often leads to high-risk sites.

⚠️ The Risks of "Free Key" WebsitesMany websites claiming to offer "Hellgate: London CD key generators" or "free giveaway keys" are often scams. These sites may: Phish for your personal information.

Require you to download "key-gen" software containing malware.

Force you through endless surveys that never provide a working code. How to Play Hellgate: London for Free (Legally)

If your goal is to play the game without spending money, your best bet isn't a leaked key, but rather the dedicated fan community. London 2038 (The Multiplayer Revival)

The most popular way to play today is through a fan-made project called London 2038.

What it is: A non-profit community server that restores the original multiplayer experience. Cost: It is completely free to play. hellgate london cd key free

Requirements: You generally need a copy of the original 2007 retail files. If you still have your old discs, you are in luck. The community provides instructions on how to patch your existing files to connect to their private servers. Abandonware Sites

Since the original 2007 retail version is no longer sold or supported by the original creators, many consider it "abandonware." You can often find the original ISO files on archival websites. While the legal gray area persists, this is often the only way fans can access the specific build required for modern fan patches. Why the Game Still Matters

Despite its rocky history, Hellgate: London remains unique for several reasons:

Atmosphere: The gothic, ruined aesthetic of London is still unmatched.

Class Variety: From the sword-wielding Blademaster to the drone-controlling Engineer.

Randomization: Its use of procedurally generated levels was revolutionary for a 3D ARPG at the time. Conclusion

Looking for a "Hellgate: London CD key free" search result might lead you to dangerous corners of the internet. Instead of hunting for a code that likely won't work, look into the London 2038 project. It is the safest, most active, and most authentic way to experience the game in the modern era. If you'd like to get started, I can help you: Find the official London 2038 website and setup guides. Check the current price and specs for the Steam version.

Compare the original game to the "Tokyo" version found on Steam. Which route

Hellgate: London remains one of the most fascinating "what-ifs" in gaming history. Created by former Blizzard North developers, it blended the loot-driven addiction of Diablo with the immersion of a first-person shooter. While the original servers went dark years ago, the desire to revisit post-apocalyptic London is stronger than ever. Many players today find themselves searching for a "Hellgate London cd key free" to unlock the nostalgia, but the path to playing in 2024 is a bit more complicated than a simple serial code. The Legend of Hellgate: London

When it launched in 2007, Hellgate: London promised a revolution. It featured randomized levels, rare gear drops, and distinct character classes like the Blademaster and Marksman. Unfortunately, technical bugs and a confusing subscription model led to the original Flagship Studios closing its doors. Since then, the game has seen several resurrections, including a Steam release and various regional "Global" versions, leaving players with multiple versions of the game and no clear way to play the "classic" experience. Why a Free CD Key Isn't the Answer

If you are looking for a free CD key to register the game on an official service, you will likely run into a dead end. Here is why:

Offline Activation: The original retail version of the game used a DRM system that is no longer supported. Even with a legitimate key, the activation servers are gone.

The Steam Version: The version currently available on Steam is a standalone, single-player focused build. It does not use the old 2007 CD keys.

Scam Risks: Websites claiming to offer "key generators" or "free lists" are often hubs for malware. Since the original master servers don't exist to verify keys, these "free" codes serve no purpose. How to Play Hellgate: London Today

If your goal is to experience the game for free or at a low cost without falling for scams, you have two primary options: 1. London 2038 (The Multiplayer Revival)

The most authentic way to play is through London 2038. This is a fan-made, non-profit project that has successfully revived the multiplayer component of the original game. Legality: You need a copy of the original game files. Cost: The mod itself is free.

Experience: It restores the community features, trading, and cooperative play that made the original special. 2. The Steam Edition

While not free, the Steam version often goes on sale for a few dollars. It is the easiest way to get the game running on modern Windows 10 or 11 systems without hunting for patches. However, be aware that this version is based on the "Hellgate: Global" build, which changed some mechanics from the 2007 original. 🛡️ Stay Safe While Searching

To protect your PC while looking for classic gaming software, keep these tips in mind:

Avoid .exe files: Never download a "KeyGen.exe" from an untrusted site.

Use Community Hubs: Trust sites like Reddit's r/Hellgate or the London 2038 forums for safe download links.

Archive.org: For those looking for the original game media, the Internet Archive often hosts ISO files of "abandonware" for preservation purposes. Conclusion

While the dream of a "Hellgate London cd key free" might lead you to shady corners of the internet, the reality is much better. Thanks to dedicated fans, you don't need a stolen key to hunt demons in the Underground. By joining the London 2038 project, you can jump back into the fray for free, supported by a community that loves the game as much as you do. To help you get started with the best possible setup:

Tell me if you have the original retail discs or are starting from scratch.

Mention if you prefer a single-player or multiplayer experience.

I can then provide a step-by-step guide to installing the necessary patches and mods.

While finding a "free" legitimate CD key for Hellgate: London

is essentially impossible today, the game has a fascinating history of revival through community efforts. Below is an article exploring the current state of the game, why old keys don't work, and how you can actually play it for free legally. Hellgate: London CD Keys: The Quest for a Lost Legend

Hellgate: London, the 2007 action-RPG from the creators of Diablo, has had one of the most turbulent lifespans in gaming history. From the collapse of its original studio to various "Global" re-launches, fans often find themselves scouring the web for CD keys to relive the demon-slaying glory.

However, if you are looking for a free or even a working retail key today, the landscape has changed significantly. The Problem with Original CD Keys

If you happen to find an old physical copy of Hellgate: London or a "free key" generator online, it’s important to know that original CD keys are defunct.

Different Publishers: The original game was published by Flagship Studios/EA. When Flagship collapsed, the intellectual property was eventually acquired by HanbitSoft.

Version Incompatibility: The version currently available on Steam is based on a later "Global" build and does not recognize the 10+ year-old keys from the original retail discs.

The "Scam" Risk: Be wary of websites claiming to offer "Free CD Key Generators." These are almost universally phishing sites or malware traps. How to Play Hellgate: London Today

If you want to play the game without paying for the Steam version, there are two primary (and much better) ways to experience the game: 1. London 2038 (The Multiplayer Revival)

The most authentic way to play Hellgate: London today is through the community-driven project London 2038.

What it is: A fan-made server that restores the original multiplayer functionality that was lost when Flagship Studios closed.

How it works: If you own the original game files (or can find them legally), you can use the London 2038 Installation Guide to connect to their servers for free. 2. The Steam Version

HanbitSoft released a single-player version of Hellgate: London on Steam in 2018. While it frequently goes on sale, it is not free. It includes content from the "Hellgate: Tokyo" expansion but lacks the multiplayer features of the original. Summary: Is there a Free Key?

In short: No. There is no legitimate source for free Steam keys for Hellgate: London. Retail keys from 2007 won't work on Steam. "Free Key" sites are dangerous and should be avoided.

Community Projects like London 2038 are your best bet for a free, high-quality experience if you already have the base game files. Original CD keys :: HELLGATE: London Discussões gerais Searching for “Hellgate: London CD key free” is

The fluorescent lights of the electronics store hummed, a low-frequency buzz that always gave Elias a headache. It was 2007, the golden age of PC gaming rigs and physical boxes, but Elias was staring at a bargain bin with the intensity of a bomb disposal technician.

He was looking for a gem in a pile of coal. He found coal, mostly. Sims 2 expansion packs with missing manuals, a copy of Deer Hunter with a cracked disc, and then, buried beneath a stack of unsold inventory, he saw the distinct, jagged red logo.

Hellgate: London.

Elias’s heart did a small flutter. He had read the reviews. It was a mess, a buggy disaster launched before its time, but it was a mess made by the creators of Diablo. It had guns, demons, and a post-apocalyptic London. It was exactly his kind of trash.

He pulled the box out. It was a "Big Box" collector's edition, surprisingly heavy. The shrink-wrap was torn on one side, but the price tag read $4.99.

"Hey, Dave," Elias called out to the clerk, who was reading a comic behind the counter. "This still has the manual?"

Dave didn't look up. "Everything in the bin is as-is, man. No returns."

Elias inspected the box. He slid the manual out. It was thick, filled with lore about the Templars and the invasion. He flipped to the back cover of the manual, then the inside front cover.

His stomach dropped.

The white sticker that should have displayed the serial number—the CD key—was peeled away. Just a jagged patch of fuzzy paper remained.

"Dave," Elias said, walking to the counter. "The key is gone. I can't install it without the key."

Dave shrugged. "Then you bought a coaster, bro. Five bucks."

"I haven't bought it yet."

"Look," Dave sighed, finally putting the comic down. "I got a call from the district manager. We gotta clear this stock by Friday. If I throw it in the trash, I have to break the disc. Environmental hazard stuff. If you take it, it’s yours for free. But no receipt, no warranty, nothing. You take the trash, you do me a favor."

Elias hesitated. A game without a key was useless. It was digital junk. But the art on the box was cool, and the soundtrack CD was probably still inside. Plus, there was a certain thrill in the scavenger hunt.

"Fine," Elias said. "I'll take the 'trash'."

He walked out with the box under his arm, feeling a strange sense of victory. A "hellgate london cd key free"—well, the game was free, the key was non-existent. But Elias wasn't just a gamer; he was a tinkerer.

Back in his dim apartment, he booted up his rig. He slid the DVD into the tray. The installer launched, bringing up a gothic, fiery menu. He clicked Install.

Please enter your 16-digit CD Key.

Elias stared at the empty box. He knew the drill. Key-generators were the tools of the trade back then, though they were riddled with viruses. He spent an hour scouring the darker corners of the early 2000s internet. He found forums filled with lamenting players complaining about the server shutdowns (the game was an MMO-hybrid, a terrible combination). He found patches. He found cracks.

But he didn't find a key.

Frustrated, he turned his attention back to the physical box. He dumped the contents onto his desk. The manual fell open to a page he hadn't scrutinized.

It was a developer diary section. A photo of the Flagship Studios team in the office was printed in grainy black and white. Elias squinted at the image. On the whiteboard in the background of the photo, someone had written meeting notes. Next to a doodle of a demon, in thick black marker, was a string of numbers.

4X9-...

It was a long shot. A desperate, stupid long shot. But gamers were superstitious creatures. Elias looked at the keyboard. He began to type the numbers he saw on the whiteboard in the photo.

He typed the last digit and held his breath. He clicked Next.

Invalid Key.

He slumped in his chair. Of course. Why would it be that easy? The photo was from 2005; the game was released in 2007.

He picked up the manual again, flipping through it aimlessly. He stopped at the copyright page. There was a small, almost invisible annotation handwritten in blue ink at the very bottom, beneath the legal jargon. It looked like a note from a quality assurance tester.

"Build 0.9.4 key: L0ND0N-TEMP1AR-..."

Elias sat up straight. The handwriting was messy, almost like a doctor's prescription. The last few characters were smudged.

...-V0RT3X? V0RTX?

He typed the first part. He needed four more letters for the final block. The smudge looked like a storm swirl.

Vortex.

He typed it in. L-0-N-D-0-N-T-E-M-P-1-A-R-V-0-R-T-3-X.

He clicked Next.

The screen flickered. For a second, he expected the dreaded Invalid message. Instead, a new window popped up.

CD Key Accepted.

Elias let out a laugh that echoed in the empty room. It wasn't a pirate key. It wasn't a generated key. It was a developer key, a backdoor left by a tester who probably scribbled it there during a final print run check, never intending for a bargain bin scavenger to find it.

The game installed. He patched it, bypassing the now-defunct servers with a community-made single-player patch. The game was buggy, the textures popped in and out, and the dialogue was cheesy.

But as he stepped into the virtual, burning ruins of Charing Cross Station, shotgun in hand, Elias smiled. He hadn't just bought a game for five bucks and talked his way into getting it for free. He had cracked a code. He had resurrected a dead world. Finding a free, functional CD key for the

The key was free, but the victory was earned.

The Ethics of Obtaining Hellgate: London CD Keys for Free

Hellgate: London, developed by Flagship Studios and released in 2007, is an action role-playing game set in a post-apocalyptic world. The game received mixed reviews but still maintains a loyal fan base. As with any software, obtaining a CD key for Hellgate: London, or any game for that matter, through legitimate means is essential for ensuring the developers' work is respected and supported.

The Case for Purchasing Games

Purchasing games or software through official channels not only guarantees access to the product but also provides support to the developers. This financial support is crucial for the creation of future projects and for maintaining the quality of service for existing ones. Buying a game like Hellgate: London with a valid CD key allows players to enjoy the full experience, including updates, patches, and customer support.

The Risks of Free CD Keys

Obtaining a Hellgate: London CD key for free through unofficial sources may seem appealing, but it comes with significant risks. These include:

Alternatives to Free CD Keys

For those interested in playing Hellgate: London without breaking the bank, there are legitimate alternatives:

Conclusion

While the allure of obtaining a Hellgate: London CD key for free might be tempting, the risks and ethical considerations far outweigh any temporary benefit. Supporting game developers by purchasing their work not only ensures a richer gaming experience but also contributes to the continued innovation and development of the gaming industry. For those interested in experiencing Hellgate: London or similar titles, exploring legitimate and supported channels is the best and most responsible approach.

The pursuit of "free" CD keys for older titles like Hellgate: London

highlights a common crossroad in digital gaming: the desire to revisit a classic versus the risks of modern digital security. While the game itself has a storied history—transitioning from a subscription-based RPG to various "free-to-play" iterations—the search for "free keys" often leads to more complications than solutions. The History of Hellgate: London

Released in 2007, Hellgate: London was an ambitious project that blended first-person action with RPG mechanics. Over the years, its licensing and server status changed hands multiple times, eventually landing on platforms like Steam. This history makes the "original" CD keys largely obsolete, as current versions of the game are typically tied directly to digital store accounts rather than physical or standalone keys. The Risks of "Free Key" Sites

Searching for "free CD keys" through unverified websites often exposes users to significant digital threats:

Malware and Scams: Many sites promising free keys are fronts for phishing or malware distribution. Steam Support emphasizes that legitimate CD keys are found on physical cards, stickers, or official purchase receipts from authorized retailers.

Key Generators: Software claiming to generate keys is almost universally a vehicle for viruses. Modern DRM (Digital Rights Management) systems verify keys against a central database, making "generated" keys ineffective.

Account Safety: Engaging with illegitimate sites can lead to the compromise of your primary gaming accounts on platforms like Steam or GOG. Legitimate Ways to Play

Instead of looking for free keys, players should look for authorized ways to access the game:

Official Digital Sales: The current version of the game is available for purchase on reputable platforms. Using legitimate services like CDKeys allows you to purchase codes that are safely delivered via email or your account dashboard.

Earned Rewards: Some platforms like OPQuests offer users the ability to earn Steam keys by completing tasks, such as wishlisting or engaging with developer content.

Community Mods: For those looking for the original experience, community-driven projects (like "London 2038") often provide ways to play the original game files if you already own a physical copy.

In conclusion, while the allure of a free game key is strong, the safest and most reliable way to play Hellgate: London is through official digital storefronts or verified reward platforms. This ensures both your computer's security and that you are playing a stable, supported version of the game. Retail CD Keys - Steam Support

The search for a "free" Hellgate: London CD key typically refers to the game's current accessibility rather than a giveaway of the original 2007 retail keys. While original physical CD keys from 2007 are generally considered null and void for modern official platforms, the game has seen several "rebirths" that make it accessible today: Modern Accessibility and Key Options

Steam Version (Paid): A single-player optimized version (Version 2.0) including the " Hellgate: Tokyo " content is available for a low price on Steam

London 2038 (Free Revival): For fans seeking the original multiplayer experience for free, the community-led project London 2038 provides a private server environment.

Legacy Retail Keys: If you find an old physical copy, the CD key is usually a 24-digit alphanumeric code found on the back of the manual. However, these cannot be redeemed on Steam for a free digital copy. Top Available Offers

If you prefer a digital license or a collector's item, here are the current market options: HELLGATE: London (PC) Steam Gift - GLOBAL

: This digital version provides the single-player experience with randomized dungeons and items. Available at Gameseal for $9.99 $11.10. Hellgate: London [Collector's Edition] (PC, 2007)

: A factory-sealed physical copy for collectors, though the included key may not be usable for modern online play. Available on eBay for $159.99. Hellgate: London (PC, 2007) Standard Edition

: Used physical copies that include the original case and manual. Available at mercari.com for $12.39 $20.00. community mod for free multiplayer?

The Quest for a Hellgate: London CD Key Free - A Comprehensive Guide

Hellgate: London, an action role-playing game developed by Flagship Studios, made its debut in 2007. The game is set in a post-apocalyptic world where players must navigate through a devastated London to uncover the mysteries behind a catastrophic event known as "The Reckoning." Despite its intriguing storyline and engaging gameplay, the game has become somewhat of a relic from the past, making it challenging to find a valid CD key for activation. However, for those looking to revisit this classic or experience it for the first time without incurring costs, the search for a "Hellgate: London CD key free" can be a tempting endeavor.

This is where the story gets interesting. In 2018, a Korean company called HanbitSoft dug up the corpse, brushed it off, and launched Hellgate: London – 2038 (a fan-driven revival) and the official Hellgate: London – Resurrection.

Better yet? The revived version is free-to-play on Steam (except for the “Hellgate: London – Global” version which has its own quirks).

Read that again. You are looking for a dangerous, broken key for a game that is literally free right now.

If you’ve landed on this page searching for a "Hellgate London CD Key free," you are likely a fan of action RPGs (Action Role-Playing Games) who wants to dive into the dark, demon-infested streets of a post-apocalyptic London without spending money. The allure is understandable. Who doesn’t love something for free?

However, the reality of finding a legitimate, safe, and working free CD key for Hellgate: London is fraught with danger, outdated information, and legal gray areas. This article will explain everything you need to know: why free keys are almost always a scam, the complicated history of the game, and—most importantly—how you can play Hellgate: London legally for free (or very cheap) today.

If you don't want to mess with private servers or Japanese MMOs, consider buying a legitimate version—but remember, the official single-player offline game is no longer sold on Steam.

Your best bet is to look for old physical PC discs on eBay or Amazon Marketplace. Search for "Hellgate London PC DVD."

The allure of searching for a "Hellgate: London CD key free" lies in the desire to access the game without purchasing it. For gamers on a budget or those interested in exploring the game without commitment, a free CD key can seem like an attractive solution. However, it's crucial to approach this with caution. Free CD keys often come with risks, including potential scams, malware, or keys that are already used or invalid.