Players take on the role of a character in a futuristic world where alien creatures known as Sprunki have invaded. The objective is to defeat these creatures in 3D space by shooting at them with various types of guns.
The gameplay involves movement and aiming through a first-person perspective. Players can move through the 3D environment, using a mouse to control their character and a keyboard to aim and fire. The core mechanic is based on rapid shooting, and players must quickly target and eliminate multiple alien creatures on the screen at once.
Throughout the levels, the challenge increases as more alien creatures are introduced, and they become faster and harder to hit. The game is designed to be run in the browser without the need for download or registration, allowing players to jump straight into the action. By mastering the shooting mechanic and eliminating all the alien creatures on each level, players progress through the game.