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Serious Sam 3: BFE

Serious Sam 3: BFE

2011  First-person shooter - GNU/Linux Mac OS X Xbox 360 Microsoft Windows Sony PlayStation 3 - multiplayer  
Serious Sam 3: BFE is an action shooter developed by Croteam. If you want action and some action on top of that action and then more action to follow, Serious Sam 3 will do you justice. The legions of alien beasts, monsters, and mercenaries are invading earth, and it seems to be the final showdown that’ll decide who’ll handle the Earth In the upcoming future. Stand your ground and hold down your trigger, the swarms of beings are rushing in and it’s up to you to stop them all! Forget cover, strategical positioning, and retreat, Serious Sam is too serious for that king of nonsense.
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Serious Sam 3: BFE - Wikipedia Serious Sam 3: BFE is a first-person shooter video game developed by Croteam and published by Devolver Digital. It is part of the Serious Sam series and a prequel to The First Encounter. The game's story takes place in the 22nd century, during Mental ...   more on Wikipedia
Quake II

Quake II

1997  First-person shooter - Sony PlayStation GNU/Linux Nintendo 64 Xbox 360 Microsoft Windows - multiplayer  
Time for a trip down memory lane with Quake II, a first-person shooter that was a groundbreaking creation by id Software at its time! Shed tears of nostalgia as you battle for survival against a vicious race of aliens!
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Quake II - Wikipedia Quake II is a first-person shooter video game developed by id Software and published by Activision. It is not a direct sequel to Quake; id decided to revert to an existing trademark when they were unable to agree on a new name that did not violate an ...   more on Wikipedia
Netrek

Netrek

1988  Strategy - GNU/Linux Mac OS X Microsoft Windows - up to 16 players total up to 16 observers Internet or localmultiplayer or single player vs. robots   1–8 players per team   2–4 teams (usually 2)  team game  
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Netrek - Wikipedia Netrek is an Internet game for up to 16 players, written almost entirely in cross-platform open source software. It combines features of multi-directional shooters and team-based real-time strategy games. Players attempt to disable or destroy their o ...   more on Wikipedia
Zero-K

Zero-K

2010  Strategy - GNU/Linux Microsoft Windows
 Get game Zero-K
Zero-K - Wikipedia Zero-K (ZK; formerly known as Complete Annihilation and CA) is a free multi-platform open source real-time strategy computer game. Initially based on content from Total Annihilation on the open source Spring Engine, it was forked and all proprietary ...   more on Wikipedia
Warzone 2100

Warzone 2100

1999  Strategy - Sony PlayStation GNU/Linux Microsoft Windows
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Warzone 2100 - Wikipedia Warzone 2100 (pronounced "Warzone twenty-one hundred") is an open source real-time strategy and real-time tactics hybrid computer game, originally developed by Pumpkin Studios and published by Eidos Interactive. It was originally released in 1999 for ...   more on Wikipedia
SiN

SiN

1998  First-person shooter - GNU/Linux Microsoft Windows - multiplayer  Single player  
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SiN - Wikipedia SiN is a first-person shooter video game based on a modified version of the Quake II engine developed by Ritual Entertainment and published by Activision in late 1998. The game was later released over Steam platform on April 5, 2006, either as a stan ...   more on Wikipedia