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Tremulous is a free and open-source first-person shooter game with elements of real-time strategy. Players can choose to play as either aliens or humans, each with unique abilities and roles.
Natural Selection 2 is a multiplayer first-person shooter with RTS elements where players can choose to play as aliens or marines in...
Alien Arena is a free online multiplayer first-person shooter game with fast-paced gameplay and a sci-fi theme.
Unvanquished is a free, open-source first-person shooter game that combines real-time strategy elements with a futuristic theme.
Xonotic is a free and fast-paced first-person shooter game.
Renegade X is a free tactical First Person Shooter with RTS elements. Players can fight for two unique teams, manage their own...
dhewm3 is an open-source source port of Doom 3 for modern Windows, Linux, and macOS systems. It improves platform compatibility, supports widescreen...
Free, requires Doom 3 data
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