1) MacOS game 
[video game] PlaneShift is a cross-platform 3D Online Multiplayer Role Playing Game in a fantasy setting. The framework is open source with the server and client released under the GNU General Public License, while the artistic content is covered under a proprietary license. All content, however, is available for free. The game requires cli...
Medieval High Fantasy MMORPG game: Planeshift takes place inside a massive stalactite and stone labyrinths outside