Idle Geometry Defense is a futuristic tower defense game where you control a crystal-like core tasked with surviving endless waves of geometric enemies. Upgrade your stats such as attack power, radius, speed, maximum health, and regeneration to hold off the incoming swarm of hostile shapes. Each level increases in intensity, challenging your ability to balance defense and offense. The game combines idle mechanics with strategic upgrades, letting you progress steadily while optimizing your build to withstand tougher waves.