Outer Planet

Play Outer Planet online for free on Play HTML5 Games for Free. This Monster browser game loads instantly with no download required. It also works on mobile devices.

The outer planet has been invaded by aliens! You need to save the planet and fight back. The game is free to play online. Outer planet alien online game is a free browser game where you fight aliens on different planets

Use your keyboard, mouse, or touch controls to start Outer Planet and follow the in-game prompts.