An open-source real-time strategy and real-time tactics hybrid computer game. It was originally released in 1999 for Microsoft Windows and PlayStation, and is now also available for macOS, FreeBSD, AmigaOS 4, AROS, MorphOS, Linux, NetBSD and OpenBSD.
An open-source HTML5 game framework that offers WebGL and Canvas.
An open-source, cross-platform game engine designed for everyone - it's extensible, fast and easy to learn.
A 2D and 3D, cross-platform, free and open-source game engine released under the MIT license.
Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!
A fast-paced, futuristic FPS with RTS elements, pitting technologically advanced humans against hordes of highly adaptable aliens.
An open-source re-implementation of RollerCoaster Tycoon 2 (RCT2), expanding the game with new features, fixing bugs and raising game limits.
A turn-based strategy video game with a fantasy setting where the player attempts to build a powerful army by controlling villages and defeating enemies for experience.