EG Space Purge is a space war game where players must protect the Earth from asteroids and small planets as long as possible. The game uses a mouse to move the players spaceship, and shooting to destroy enemy spacecraft. Each level has an increasing number of ammo, which increases the number of hits and earns extra points. There are three types of spaceships and three types of lasers available for use in the game. Additionally, there are life improvements for the players spaceship that can be purchased with in-game currency.