Formation Builder Idle
Idle Games LLC · 2026 · RPG, Strategy, Idler, Casual, Auto Battler
PC
Best price
Free
This game is free to play.
About Formation Builder Idle
Build the ultimate hero formation on a tactical grid, then watch your team crush endless waves. Level heroes, collect mounts, farm pets, dig into mines, and prestige across 17+ worlds, all while you're away. A deeply layered idle RPG with real strategic depth.