Linux Softwares to Sci-fi Setting

Alien Arena is a fast-paced, free-to-play deathmatch style first-person shooter set in a futuristic, science-fiction universe. It emphasizes classic arena combat with a variety of weapons, maps, and game modes, offering both online multiplayer and single-player bot matches for intense action.

Tremulous is a unique free and open source team-based first-person shooter that seamlessly blends FPS action with real-time strategy elements. Players join one of two opposing teams, Humans or Aliens, each with distinct capabilities and objectives, engaging in fast-paced combat while managing resources and building structures to gain an advantage.

Dead Space is a critically acclaimed survival horror video game series known for its intense atmosphere, grotesque creature design, and visceral combat. Players take on the role of Isaac Clarke, an engineer struggling to survive a horrific outbreak on a deep-space mining vessel.

Alien Swarm is a free-to-play, top-down cooperative shooter developed by Valve. Players control a squad of marines battling hordes of extraterrestrial enemies in various sci-fi environments, emphasizing teamwork and tactical gameplay.

Nexuiz Classic is a fast-paced, free and open-source arena first-person shooter that delivers intense multiplayer combat with a focus on classic deathmatch gameplay and a wide array of futuristic weaponry.

Borderlands is a critically acclaimed action role-playing first-person shooter series known for its unique cell-shaded art style, over-the-top humor, and procedurally generated loot system.

OpenArena is a free and open-source standalone 3D first-person shooter game. It is a community-developed clone of Quake III Arena, offering fast-paced multiplayer and single-player combat with a variety of weapons and game modes.

Xonotic is a fast-paced, arena-style first-person shooter with a focus on pure competitive gameplay. It is free, open-source, and offers both single-player and robust multiplayer modes with a variety of weapons and game types.

Unreal Tournament is a classic arena first-person shooter series emphasizing fast-paced multiplayer combat. Known for its intense gameplay, diverse weaponry, and iconic maps, it offers a pure and adrenaline-fueled gaming experience in both online and offline modes.