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Guitar Rage is a Guitar Hero clone in Portuguese, includes three tracks but more can be downloaded from the official website, from groups like Guns 'n Roses...
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Harpooned is a free game for Windows and Mac. It is a Cetacean Research Simulator, where you play the role of a Japanese scientist performing research on whales.
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Mario Paint Composer is a remake of the music system from the original Mario Paint for the Super NES. It is made by unFun Games. The game is, of course, completely free...
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Oolite is a space sim game, inspired by Elite, powered by Objective-C and OpenGL, and designed as a small game that is easy for users to pick up, modify and expand upon.
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Opera Slinger is a free, rock-opera singing game designed and created by a team of ten students at the Florida Interactive Entertainment Academy in Orlando, FL.
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osu! is primarily played using a mouse to click 'beats' displayed on-screen in time with the music. This is analogous to tapping the beats on the Nintendo DS screen with a stylus.
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This is the first game in the Pakoon trilogy. The creator made the game to learn more about OpenGL graphics programming and at the same time coded a simple mass-spring physics.
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RiftSpace introduced freeform gameplay by letting the player select contracts, travel to other planets, and customize/upgrade their ship and their squadron's.
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Star Wraith 3 took the graphics and gameplay to an entirely new level. This was the first game to feature multiplayer, players of the game could connect over the internet or LAN.
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Star Wraith 4 brought new features, gameplay and effects to the game. This was the first game to feature a mining and tractor beam along with new mission objectives.