Metal Gear Rising- Revengeance-blackbox Repack -

Even by 2025 standards, the game is incredibly lightweight:

The trade-off for the tiny file size is installation time. On a modern SSD and mid-range CPU, installing the BlackBox repack of Revengeance takes approximately 10-20 minutes. On an older mechanical hard drive, it can take 30-45 minutes. The installer unpacks every file on-the-fly, reconstructing the full 25 GB game on your hard drive. Metal Gear Rising- Revengeance-BlackBox Repack

Once installed, however, the game is bit-identical in performance to the paid Steam version. It supports 1080p (and higher via ini edits), uncapped framerates (crucial for the parry mechanic at 144Hz), and all the original DLC (Blade Wolf, Jetstream Sam, and VR Missions) are typically included in the repack. Even by 2025 standards, the game is incredibly lightweight:

As this is an unofficial third-party release, it has specific recurring issues: The trade-off for the tiny file size is installation time

The BlackBox repack took the 25 GB Steam release and compressed it down to an astonishing 2.2 GB to 2.4 GB (depending on the version). That is a compression ratio of over 90%.

How did they achieve this cybernetic wizardry?