Experimental, unofficial fan mods that add co-op and multiplayer play to ten NES games, as BPS patches. No ROMs included. Not made or endorsed by Nintendo.
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Updated
Oct 27, 2026
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four-score
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An experimental, unofficial fan mod of Super Mario Bros. for up to four players at once, as Mario, Luigi, Toad or Peach. A BPS patch for the NES original: no ROMs included.
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Oct 21, 2026
Contra (NES) for 4 simultaneous players with the Four Score — ROM hack by Killerz. Download the IPS patch from Releases!
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Oct 29, 2026 - Assembly
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