CPU Invaders

In CPU Invaders, you defend your computer from invaders by playing a shooter that overlays the action on your desktop. The floating game window lets you keep using your computer, such as watching videos or chatting, while you play.

Move with the keyboard and aim and fire with the mouse, using different attacks to shoot enemies and dodge their attacks. Each stage introduces enemies with distinct abilities, and some stages feature boss battles.

Clear each stage by defeating its target number of enemies without losing all three hit points. The ten stages can be attempted as they become available, and the game tracks your score as you defend your system.

The supplied reviews often single out the desktop overlay as an unusual, memorable idea, and some players enjoy the quick, straightforward arcade shooting and its challenge. Others find the gameplay too simple or brief, and reviews also criticize steep difficulty spikes, distracting visuals, and the price.