Play 90s classic X-Com – UFO Defense in the browser via WASM
Play OpenXcom online in your browser. X-COM: UFO Defense via WebAssembly — no install, works offline. Bring your own game data. playxcom.online
Play 90s classic X-Com – UFO Defense in the browser via WASM launched on March 19, 2026 with 5 votes, #1,928 of 23,380 launches that month and more than 75% of that year's launches.
What it does
MicroProse's 1994 masterpiece X-COM: UFO Defense , lovingly rebuilt for the modern era by the OpenXcom community, now running natively in your browser. No downloads. No installs. Just pure tactical alien combat 👽 Compiled to WebAssembly. No plugins, no install. Works in Chrome, Firefox, Edge, and Safari. Cached locally after first visit for full offline play. Game files live in your browser's IndexedDB. Nothing is uploaded to any server. Your data and saves never leave your machine. You are in full control. Save your game and come back later. Progress persists across browser sessions. Export and import .sav files to move games between devices. Already own a copy? You can use data…from playxcom.online
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