Navigate portals and use aerial faith plates to move through test chambers. Guide Chell and Wheatley past turrets and obstacles. Unlock achievements and track progress through levels. Share scores and compete with other players online.
Play as a spaceship pilot defending orbit against enemies. Shoot asteroids, spaceships, bosses, and other targets. Avoid mines and missiles. Upgrade weapons and use special abilities to defeat unique enemies and space worms.
Play multiple offline - including puzzles, arcade titles, and brain teasers. Complete levels, track high scores, and test skills. Features easy controls, local storage, and no internet requirements for gameplay.
Shoot aliens, blast through galaxies, earn points,
Play as a spaceship defending against waves of alien invaders. Shoot enemies to destroy them. Upgrade weapons and power-ups. Navigate through levels with increasing difficulty. Track scores and compete with others.
