Impostor Among Space is a free Arcade game you can play instantly in your browser, with no download and no registration. How to play: mouse only. It renders at 460 by 700 pixels and scales to your window. It joined SaGo Games on October 29, 2026. It is an HTML5 build, so it loads in any modern desktop or mobile browser.
Impostor Among Space is a thrilling single-player stealth game where you play as the Impostor aboard a spaceship full of unsuspecting AI crewmates. Your mission? Eliminate them one by one, sabotage critical systems, and avoid detection at all costs. Use vents to sneak around, trigger fake emergencies to lure crewmates, and strike when no one is watching. But be careful—the AI crewmates are always watching, and if they suspect you, it’s game over. Can you outsmart the crew and take control of the ship?