Formation Builder Idle

Formation building

Formation Builder Idle is a PC idle RPG where you arrange heroes on a tactical grid and send the formation against endless waves. The main decision is how to set up your team before watching it fight. The game combines that grid-based setup with progression that continues while you’re away.

Progression and worlds

You level heroes, collect mounts, raise pets and dig into mines. Prestige gives you a way to reset and progress across 17+ worlds. The loop pairs formation building with these upgrade and collection systems, while the team keeps fighting endless waves.