An open-source real-time strategy and first-person shooter space combat game with multiplayer support.
Allegiance - RTS + FPS Space Combat game
The ioquake3 community effort to continue supporting/developing id's Quake III Arena
Chocolate Doom is a Doom source port that is minimalist and historically accurate.
Vulkan Quake port based on QuakeSpasm
UZDoom is a feature centric port for all Doom engine games, based on GZDoom, adding an advanced renderer and powerful scripting capabilities
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