Idle Mutation Tower Defense

Idle Mutation Tower Defense blends standard tower-placement strategy with an idle-game twist: your towers keep fighting off incoming waves even while you are not actively watching the screen. Placing a tower is only the first step, since each one can mutate and upgrade over time, gradually growing stronger the longer it stays in play. That means the choices that matter most are which towers to invest in early and where to place them so they keep earning value passively, rather than reacting to every single wave in real time. Checking back in to reinforce weak spots or redirect resources toward a mutating tower that is paying off becomes the core rhythm of play. It suits players who like tower defense's core loop but want a version that keeps progressing in the background.