| Mistake | Calliope Fix | |---------|---------------| | Building too many Rangers | Stop at 4. Train Soldiers after Day 5. | | Expanding before walls | No outer building until a Wood Gate is placed. | | Researching Logistics first | Research Farming first (food = more Cottages = gold). | | Ignoring energy cap | Build Windmill on Day 4 exactly, not earlier. |
The traditional "Ranger Spam" into "Thanatos Wall" meta has been the gold standard for years. However, the Calliope build shifts the focus. Instead of tanking the hit, you aim to delete the wave before it ever touches your stone walls.
The Core Unit: In this build, we prioritize the "Calliope" archetype—a unit with high splash damage, extreme range, but low mobility and high cost. (If playing vanilla, this translates to a heavy investment in Snipers or Ballistas backed by Titan support).
The steam-warm sun hung low over the jagged skyline, gilding the skeletons of towers half-swallowed by vines. Where the old city once hummed with industry, silence had learned to breathe. A single road—scarred asphalt, overrun by saplings—led to the rim of the broken Citadel, and beyond it a plain where the endless dead had once crawled in ruined formation.
Calliope stood at the lip, hands tucked into a coat patched with scavenged circuit boards and faded propaganda. She was not its original name; the machines of the Before had given her a song and the survivors a nickname: Calliope, because she played the last instruments of civilization—memory, code, and the stubborn rhythm of construction.
"They are billions," old scavengers used to say, eyes glazed as if counting skins and teeth. The phrase had been a mantra, a curse, a date: the moment when the tide rolled and the cities became hunting grounds. Calliope had heard it since she was a child, a warning chanted over fires. It was true once, in the straightforward way truth clings to a map. But truth, like the map, had been redrafted in the years after the Fall.
She carried a blueprint in her pack—rolled paper interlaced with fiber-optic threads, a palimpsest of engineering dreams. The blueprint smelled of oil and rain. It was an old design for a water condenser that could support an outpost without constant foraging; a scaffold for gardens under glass; a crude algorithm to coax sunlight into clean power. "Build new," it said in the margins, in a handwriting she could not trace. The command was both simple and revolutionary.
Calliope’s crew—five others, each bearing a scar that told a profession: a surgeon’s steady thumb, a teacher’s folded book, a miner’s rough palms—waited in the hollow below. They had watched her push deeper into ruins, trading scrap for parts, telling stories to barter hope. Tonight they would do more than survive. Tonight they would build.
They moved quietly across the plain. The wind carried no groan; it carried only the small busy sounds that meant life: an engine’s cough, a child’s laugh caught and tucked away, someone hammering a rhythm against metal. The outpost they chose was a hollow like a cupped hand, shielded by ruined concrete and a stand of blackened pines. It had water near the surface and sun for a few hours each day—rare commodities, but enough with the right design.
Calliope unrolled the blueprint and began to call the parts into being. They scavenged panes of glass from an old atrium, melted copper from a collapsed tram, and rewired a generator whose whisper reminded them of lullabies. The condenser took shape like a small cathedral—arches of lattice, bell jars to drink the night air, channels to collect what the desert sky could forgive them.
"They are billions," whispered Tomas, the youngest, tracing the blueprint as if it were a religion and he a novice. "Will they come back?"
Calliope pressed her thumb to the drawing, to the looped script of Build New. "Maybe," she said. "But maybe billions was never only about numbers. Maybe it was about the weight we thought we carried—the weight of fear, of habits learned in ruins. We were counting bodies. Now we count out the things we can make."
Under the glass, seedlings unfurled pale leaves. Water breathed into copper coils and slid down into an earthy basin. The generator hummed at a pace that matched Calliope’s heartbeat, then steadied. The condenser filled, a small, miraculous lake of potable clarity. The outpost erupted—not in noise, but in steady, deliberate motion. Neighbors came with armfuls of old tools, with a piece of cloth, with a jar of seeds. They came because the work itself suggested a future.
Word traveled like a new language. Some called her an engineer, others a dreamer. Children followed the scaffoldings with naked feet and sticky hands. Calliope taught them how to wind coils and stitch solar cells onto a salvaged frame. She taught them how to read the old maps without succumbing to the panic in their margins. Build new, she said, means more than replace what was lost. It means invent what will fit the world now.
One night, as starlight filled the condenser’s glass with trembling constellations, a ragged band arrived at the outpost’s gate. They were neither the faceless swarm of the old stories nor the polished militia of the pre-Fall; they were simply a group of survivors, hungry, frightened, and curious. Calliope offered them water first, because water was the human language everyone understood. Then she showed them the plans.
"Can you fix our pump?" one asked.
"We will try," she said. "But tell us what you have, and we can build something better."
They pooled what they had: a clock spring, a cracked lens, some powdered coal. Calliope’s crew set to work not to reconstruct an old pump but to adapt, to iterate—a pump that ran on bellows and sun, a filtration array that used old theater velvet as a membrane. The newcomers stayed, then taught others the tricks they knew. Networks formed not by authority but by need and generosity.
Years shifted. The little outpost became a hub, a place where ideas circulated like trades. A library of salvaged schematics grew—drawings annotated with marginalia: "use ceramic here," "don't trust the valve in heavy heat," "try tin plating if you want longevity." The phrase "they are billions" transformed. It stopped being a tally of horror and became shorthand for scale—the measure of how many small fixes must be made, how many stubborn incremental inventions would stitch a culture back together.
Calliope did not live to see all the cities green again. She grew older, her hair threaded with wire and dust. On a morning where frost rimed the condenser and the children she taught tested a new irrigation array, she walked to the edge of the plain and looked over the land she had helped to tilt back toward life. In the distance, columns of smoke marked other outposts—others who had read the same margins and folded "build new" into their work.
A child approached, breath puffing white, and asked, "How do you build so many things?"
Calliope smiled and tapped the old blueprint, now frayed and patched. "You don't build all at once," she said. "You teach someone to bend a wire. They teach another how to weld a shard. Each fix is small, but together they are enormous. They become billions of better things."
The child laughed, then ran back to the scaffold, where laughter and the clank of metal sounded like hopeful percussion. Calliope turned back to the outpost as the sun climbed. The condenser shone like a promise. Around it, people were learning the quiet craft of survival that doubles as creation.
Build new, she had learned, meant more than reconstructing a vanished world. It meant composing a future from the scraps of the past—assembling not only machines but practices, not only shelters but shared rules for tending them. It meant counting not the dead but the hands willing to make.
When her voice finally thinned to a soft hum, the community carried her into the heart of the outpost. They placed her hand on the blueprint and pinned a new line beneath the old margin, written in many hands: "For Calliope: keep building."
And so the work continued: not as a frantic march against an endless tide, but as a thousand small, stubborn constructions—gardens, pumps, songs, libraries—woven into a fabric dense enough to hold a new civilization. They were billions, after all—not in the old terror, but in the countless acts of making that reassembled a broken world into something that might last.
End.
The Ultimate Calliope Build Guide: Mastering the "Devil’s Sisters" In They Are Billions,
is the agile, high-speed alternative to the lumbering Caelus. While she has lower health and damage per shot, her ability to kite and fire rapidly makes her a lethal asset for tactical missions when built correctly. Core Character Stats Health: 60 HP (Low, requires careful positioning). Attack Range: 4.5 tiles. Attack Speed: 5.0 (Base). Movement Speed: 3.2 (Fastest hero). Recommended Skill Tree Priorities
To maximize Calliope’s potential, focus on Damage breakpoints and Attack Speed rather than survival stats. Damage & Range (High Priority):
Invest in at least three damage upgrades (+30%, +40%, +50%) to reach approximately 33 damage. This allows Calliope to kill Harpies in exactly 4 shots. they are billions calliope build new
Maxing her range to 6.5 is critical for engaging enemies before they can close the gap, potentially making HP/Armor upgrades redundant. Attack & Reload Speed:
Reload Speed: A single point in +40% load speed significantly reduces re-targeting animations, making "kiting" much smoother.
Attack Speed: Multiple perks can boost her speed to nearly 3x her base, allowing her to shred through crowds of runners. Utility & Survival:
Movement Speed: Already her greatest strength; one point is usually enough to maintain a safe distance from most infected.
Noise Reduction: Generally considered underwhelming; specialized players prefer killing enemies quickly over being stealthy. Tactical Mission Strategy
Run and Gun: Utilize her superior movement speed to "kite" hordes. Fire a few shots, move back, and repeat.
Animation Canceling: You can ignore reload times by issuing a new attack command immediately after a shot, a trick that works particularly well with Calliope’s rapid pistols.
Harpy Engagement: Always aggro Harpies at max range (6+ cells). If they get too close, rely on grenades or medkits rather than trying to tank the damage. Late-Game Viability
In high-difficulty 800%+ runs, a fully upgraded Calliope becomes a "Valkyrie," often accompanied by veteran Rangers in tactical missions. While Caelus excels at stationary defense with AOE, Calliope is the superior choice for players who prefer a proactive, micro-intensive playstyle to clear maps.
In the They Are Billions campaign, is the high-mobility, high-risk "assassin" hero compared to Caelus’s tanky, slow-firing style. While she starts with low damage and short range, a "new" and optimized build focuses on achieving specific breakpoints that allow her to clear tactical missions—especially those with Harpies—without taking a single scratch. The "Harpy-Slayer" Core Build
To make Calliope viable at higher difficulties (500%–800%), you must prioritize range and damage to hit the "4-shot Harpy" breakpoint. Priority 1: Attack Damage (Aim Perks)
Invest in at least three damage upgrades (+30%, +40%, and +50%) to reach roughly 33 damage.
Goal: This allows Calliope to kill a Harpy in exactly 4 shots after damage reduction, often before they can close the gap. Priority 2: Range (Improved Vision) Unlock Improved Vision III (+1 Range) early.
Goal: Kiting is your lifeblood. Reaching a range of 6.5+ cells ensures you can aggro elites at a safe distance and fire enough rounds to kill them while backpedaling.
Priority 3: Attack Speed & Reloading (Dexterity/Quick Reflexes) | Mistake | Calliope Fix | |---------|---------------| |
Pick up at least one Attack Speed (+20%) and one Reload Speed (+40%) perk.
Goal: Faster reload times reduce the "stutter" in your kiting, making it harder for runners to catch you between shots. Essential Support Perks
Once your damage is stabilized, these "utility" picks ensure survival if a mistake happens:
Protection I & Strength II: Just one point in each (Armor +15% and Life +30%) allows Calliope to survive up to 3 hits from a Harpy rather than dying instantly.
Speed I: While she is naturally fast, a single speed perk ensures she can outrun literally anything on the map, including Harpies when kiting. Advanced Tactical Tips
Animation Skipping: You can kill zombies 2–3x faster by clicking a new target the instant Calliope fires her last shot. This "microing" skips the reload animation and is essential for clearing the Foundry or Medical Center on Apocalypse difficulty.
The "Feet Grenade": Harpies are faster than Calliope. When they agro, run away, wait for them to start their attack animation, then drop a grenade at your own feet while continuing to move. The delay on the blast will catch the Harpy right as it reaches the spot you just left.
Stealth vs. Aggro: While Calliope has noise reduction perks, they are often considered less efficient than raw damage. High-level play typically involves clearing maps by intentionally pulling small groups and kiting them back to cleared rooms. Calliope | They Are Billions Wiki | Fandom
In a standard build, you build a barracks and spam rangers. In the Calliope build new, you sell the starting tent, rush a wood workshop immediately, and beeline for the Foundry tech.
Day 1-5 Priority:
The "Calliope Build" is not a one-trick pony; it is an economic ramp-up strategy that prioritizes tech efficiency over raw early-game military might. The central thesis is simple: The Luciernaga (Lucy) carries the early game so the Calliope can carry the mid-game, rendering the late game a formality.
Previous meta builds often struggled with the "doom wave" transition—moving from weak early units to expensive heavy hitters. The Calliope build bridges this gap perfectly.
Once the Calliope foundation is set (Day 6, ~400 gold/tick, 6+ soldiers), shift to:
The rhythm established in the first six days directly determines if you can survive the first wave (Day 10) and the second wave (Day 20). Calliope builds consistently achieve a 90%+ survival rate to Day 12 on 400% difficulty in New Empire.
By the final wave, you should have 6-8 Calliopes protecting your outer defenses. Do not put them on the front line (they have only 300 HP). Put them directly behind your Thanatos bunkers. The traditional "Ranger Spam" into "Thanatos Wall" meta
The Final Tip: When the swarm of 50,000 infected hits, pause the game. Click on each Calliope and set the "Song Mode" to Requiem (The slow, sad song). This reduces your Colony Happiness by 20, but increases unit damage by 25% for 60 seconds.
Trigger them in sequence: Left flank, then Right flank, then Center. This staggered buff will melt even the Mutant hordes.