Invaders are living inside your computer. You shouldn't let that happen! Interact with your desktop while playing, watch Youtube videos, chat with your friends and more! CPU Invaders overlaps the game itself with your computer screen.
Players control a character using the WASD keys, with the ability to fire two distinct weapon types - a single-line shot triggered by the left mouse button, and a semi-circular spread shot activated by the right mouse button. This diverse arsenal allows players to adapt their approach to the evolving enemy threats.
The game features a steady increase in difficulty across its 10 levels, tasking players with memorizing intricate enemy spawn patterns and devising effective strategies to overcome the escalating challenges. While some later stages, especially the final boss, can be quite demanding, players report a satisfying sense of accomplishment upon mastering these obstacles.
A standout mechanic allows the game's transparent window to overlap the player's actual desktop, using the desktop background as the game environment. This novel approach immerses players in the action, encouraging them to customize the visuals by selecting personalized desktop wallpapers.
Reviewers appreciate the game's flexibility, which enables players to multitask by performing other activities, such as watching YouTube videos or chatting with friends, while engaging with the shooter gameplay in short bursts. This versatility caters to a wide range of player preferences and habits.
Beyond the main 10-level campaign, the game offers 13 achievements to pursue, providing an additional layer of challenge and incentive for players seeking to extend their experience and push their skills further.