They Are Billions

They Are Billions is a hardcore real-time strategy survival game set in a steampunk apocalypse overrun by the infected. Build and manage a human colony, balance economy and expansion, and engineer layered defenses to withstand overwhelming zombie swarms. Use the pause-and-plan system to issue precise commands, optimize layouts, and micromanage units under extreme pressure. Procedural maps, escalating waves, and deep tech progression reward meticulous planning, timing, and risk management.

Explore nearby terrain with rangers to reveal resources, chokepoints, and infected clusters. Build a stable economy by placing housing and food producers, then add sawmills, quarries, and power for sustained growth. Expand methodically with patrols and lookout towers, clearing threats while securing space for farms and industry. Fortify perimeter lines with layered walls, gates, towers, and traps, repairing immediately to stop infection spread. Research advanced tech to unlock stone, oil, heavy defenses, and late-game firepower against massive swarms. Prepare for timed hordes and the final onslaught by assigning control groups, scouting attack directions, and concentrating defenses.