A space exploration and combat game similar to Escape Velocity. For windows, linux, mac and source code.
Created for the 25Th anniversary of the game BARBARIAN in 2012, here is an “open source” clone of the versions of Amstrad CPC , Commodore 64 , Spectrum ,Atari ST ,Amiga 500, PC and AppleII. The various versions of the game can be played on PC Windows or a Sega Megadrive(emulated or real console).
UPDATE: This software seems outdated. Take a look here for an alternative… Link and here is the Gamemaker full list
Open RPG Maker is a free and open source 2D RPG creation utility, similar to the popular RPG Maker series. Open RPG Maker is mostly based on RPG Maker 2003, but with some added features, and more advanced usability. This tool will allow users to create 2D RPG games similar to the original Final Fantasy games, such as FF5 and FF6. Though it will also support the creation of games following a Zelda like playability. Unlike the RPG Maker series, Open RPG Maker will have the ability to play more than just midi and wav music files. Open RPG Maker will also be using 32×32 tiles of up to 24bpp, instead of the 16×16 8bpp limit in RPG Maker 2003. Also, Open RPG Maker will support more than just PNG graphics formats.
A free open source multiplayer strategy game. Grow in power by conquering castles. Gain vassals until you can overthrow your lord and climb the tree to become the Dominus.
Since the Humble Indie Sales (The first Humble Indie Bundle from May 4 through May 11, 2010) surpassed the 1 million.. Authors of the games decided to release the source codes.. As far as i know only world of goo didn’t release the source code.
The Games Source are:Gish,Penumbra,Aquaria and Lugaru.
The “sea trials” are over and World of Warships is sailing into Open Beta. Everybody can now download and play the game.