This build prioritizes a compact, high-efficiency housing block centered around a single Calliope. We will treat the Calliope as a Tier 1.5 structure—just after the Wood Workshop but before the Stone Workshop.
Focus solely on economy. Build Tents → Fishing Huts/Hunting Cabins → Wood Workshop . Do not waste time on walls or towers yet.
Many players stumble by investing heavily in defensive perks, creating an accidental "trap build" that fails to stop fast-moving threats like Harpies. This comprehensive optimization guide breaks down the math, pathing, and strategic deployment for the definitive designed to clear Hero Missions seamlessly—even on Apocalypse difficulty. The Core Philosophy: Offense Over Defense
Perk points are rewarded exclusively by completing Tactical Scouting Missions for the first time. Plan your progression tree using this specific stat hierarchy:
: Don't waste grenades on standard runners. Save them for tight clusters of zombies or high-priority targets like Harpies that can outrun her. Environmental Awareness they are billions calliope build new
You are trading safety for speed. A ranger clears one zombie per second. Calliope clears a wave of 30 zombies in 10 seconds. The "noise" penalty is irrelevant because you are inviting the horde to a kill box you control.
: These are critical. You want to kill runners in as few shots as possible (aim for a 2-shot kill) and engage enemies from a distance to maximize kiting time. Attack/Reload Speed
Let’s be honest: In They Are Billions , you usually win or lose based on your economy and your Thanatos count. But every so often, a unique unit drops from a mayor or a Doom Town crate that forces you to change your entire playstyle.
In the brutal campaign of They Are Billions , your choice of hero dictates how you survive tactical missions. While Caelus offers raw area-of-effect power, is the master of speed, kiting, and surgical precision. Building her correctly is the difference between a frustrating death at the hands of a Harpy and a lightning-fast map clear. Calliope: Unit Overview Build Tents → Fishing Huts/Hunting Cabins → Wood
Investing in 3 of the 4 damage upgrades brings her damage to 33. This is the "magic number" that allows Calliope to kill a Harpy in exactly 4 shots after damage reduction, preventing wasted "overkill" damage.
This is the single most important breakpoint in her build. To reach 33 base damage, your upgrade path should include : Aim I (+30%), Aim II (+30%), Aim III (+40%), and the central Aim IV (+50%).
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:
| Day | Action | Why? | | :--- | :--- | :--- | | | Scout with Calliope. Build 2x Hunter Cottages. | Find stone. | | 5 | Build Wood Workshop. Research Farming. | Stabilize food. | | 8 | Build Foundry. Queue "Sonic Amplifier" upgrade. | Increases piercing to 5 targets. | | 12 | Build 1 Ballista at closest choke. | Backup for when you sleep. | | 20 | Spam Tents to 400 population. | Trigger Morale Boost x3. | | 30 | Build Stone Walls. No towers. | Let Calliope roam. | | 45 | Pivot to Thanatos + Shock Towers. | Cover her weakness vs. Giants. | This comprehensive optimization guide breaks down the math,
By placing the Calliope at the heart of your economy and layering your defenses within its resonance radius, you turn a quaint musical instrument into the deadliest weapon in the Empire’s arsenal.
In a standard build, you build a barracks and spam rangers. In the , you sell the starting tent, rush a wood workshop immediately, and beeline for the Foundry tech.
They Are Billions campaign, building a "solid" focuses on maximizing her ability to "hit and run" while ensuring she can survive the game's deadliest hero-mission enemies, like Harpies. Steam Community