It's the game that redefined Co-Op games. Play locally via a network with up to 4 players through the single player campaign. You can play on the internet using various 3rd party utilities. Tons of versions available as well.
You're a Marine stationed on Mars when a military experiment goes wrong. Your mission: Blast your way to freedom through the classic world of DOOM. Face off against Hell's army, including stampeding demons, and lay waste to rooms of monsters with an arsenal of classic weapons.
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