Space Defense Idle

Play Space Defense Idle online for free on Play HTML5 Games for Free. This Arcade browser game loads instantly with no download required. It also works on mobile devices.

Your mission is to ensure the safety of all space. For this you need to destroy the enemy ship that is trying to invade Earth's orbit. Fire your cannon as often as necessary to keep the Earthlings safe!

Use your keyboard, mouse, or touch controls to start Space Defense Idle and follow the in-game prompts.