Open games by popularity
The term open is used for games when most parts of the source code are publicly available.
Many of these games are published under the GNU General Public License (GPL) but also a wide variety of different licenses are used as well, some are more popular than others and some are custom ones. A game can have more then one license, one for the engine and another one for artwork or music. A game who's artwork is not published under an open source license is still eligible for this tag if the game code is.
The Legend of Edgar
Action, Adventure, Platform When Edgar's father fails to return home after venturing out one dark and stormy night, Edgar fears the worst: he has been captured by the evil sorcerer who lives in a fortress...
Stendhal
Role-playing, MMO Are you looking for adventure? Want to fight for riches? Develop yourself and your social standing? Meet new people? Do you want to be part of a brave new world? Stendhal is a...
Minetest-c55
Role-playing Minetest-c55 is one of the first InfiniMiner/Minecraft inspired games, with a goal of taking the survival multiplayer gameplay to a slightly different direction.
FreeSpace 2 Open
Action, Shooter From the time it became apparent that there would be no FS3 the most repeated complaint the community had was that Volition wouldn't release the source code so that the community...
Descent 2 (D2X-XL)
6DoF, Action, Shooter D2X-XL is a port of Descent 2 to OpenGL. It is an open source project and has received a lot of enhancements compared to Descent 2. My work on this project would not have been...
UFO: Alien Invasion
Strategy, Turn-based It is the year 2084. You control a secret organisation charged with defending Earth from a brutal alien enemy. Build up your bases, prepare your team, and dive head-first into...
Zero-K
Strategy, Total conversion, Real-time Zero-K is a FREE, multiplatform, open-source RTS game. It aims to be dynamic, action-packed and hassle-free, full of clever strategies and constantly moving combat with games...
Annex: Conquer the World
Strategy, Real-time Annex: Conquer the World is a Glest mod that brings fast paced combat with a diverse arsenal. Play as one of two Factions: The East Ocean Alliance or the Northern Empire, as they...
Battle for Wesnoth
Strategy, Turn-based The Battle for Wesnoth is a turn-based strategy game with a fantasy theme. Build up a great army, gradually turning raw recruits into hardened veterans. In later games, recall...
Heroes of Might and Magic III (VCMI)
Role-playing, Strategy, Turn-based VCMI is attempt to rewrite the entire H3 engine (VCMI is NOT another mod) giving it new possibilities. Many months of intensive work resulted in creating application with...
Summoning Wars
Role-playing Summoning Wars is an open source role-playing game, featuring both a single-player and a multiplayer mode for about 2 to 8 players.
Pokemon Online
Arcade, Strategy, Turn-based Pokemon Online is the most up to date Pokemon Battle Simulator that allows a person to experience real time Pokemon battles against Pokemon players from all over the globe. Its...
Red Eclipse
Action, Shooter Red Eclipse is a Free and Open Source game, using SDL and OpenGL which allows it to be ported to many platforms.. The game is a single-player and multi-player first-person ego-...
OpenTTD
Simulation, Economy OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as...
Seven Kingdoms: Ancient Adversaries
Strategy, Real-time Award winning RTS now open source. Seven Kingdoms, designed by Trevor Chan, brings a mix of RTS like Warcraft 2 and turn-based strategy of Civilization. The real-time strategy...
UFO2000
Strategy, Turn-based UFO2000 is a free and opensource turn based tactical squad simulation multiplayer game, heavily inspired by the famous UFO: Enemy Unknown and providing a very similar...
