Formation Builder Idle Playtest

Every hero changes the heroes beside it. Arrange 46+ heroes on a grid, chain their abilities, and find the layout that multiplies your damage. Then prestige across 21 worlds, fight with mounts, and run missions, mines and a workshop while you're away.

Type

Steam Playtest

Status

sign-ups open

For

Formation Builder Idle

Developer

Idle Games LLC

Platforms

Windows, macOS, Linux / Steam Deck

Release

Mar 6, 2026

First seen

2026-10-16