Idle Mutation Tower Defense

1. Your fortress shoots approaching monsters automatically.
2. Gather red crystals for boosts that last the current run.
3. Spend blue crystals on research and genetic material on new mutations.
4. When a run ends, raise your core stats and try a different build.

Idle Mutation Tower Defense is a roguelite with a biopunk fantasy setting, in which your single tower is a living fortress. It fires at monsters automatically; your job is to shape how it grows. Upgrades physically transform it, sprouting 3D organs that change how it fights — attack organs, protective structures and rare cores that combine into powerful mutations. During a run, red crystals pay for boosts that last the run, blue crystals go to research, and genetic material opens up new mutations. When the fortress falls, part of your progress carries over, so you can improve base stats and abilities before the next, deadlier attempt. Experimenting with different builds is the heart of the game.