Open Sonic is a free open-source game based on the "Sonic the Hedgehog" universe.
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Yo Frankie! is a free 3d adventure game from the Blender institute.
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SuperTux is a classic 2D jump'n run sidescroller game in a style similar to the original Super Mario games covered under the GPL.
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Secret Maryo Chronicles is an Open Source two-dimensional platform game with a design similar to classic computer games.
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Ultra Bear is a fun, side-scrolling platform game.
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Bombermaaan is a classic bomberman game with multiplayer support.
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Mega Mario is a Super Mario Bros 1 clone.
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Wormux is a free and open source 2-d platform game.
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Armagetron is a multiplayer game in 3d that attempts to emulate and expand on the lightcycle sequence from the movie Tron.
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PainTown is a 2d side scrolling beatem-up game based on the Sega Genesis game, Streets of Rage 2.
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