For a game similar to 'SourceForts' ...

Video Game genre...

Action adventure RPG Shooter Racing Platform Strategy Fighting Simulation puzzle MMORPG Music Arcade Fantasy Eroge Sports game Visual novel Survival horror Third-person shooter First-person shooter

On following platform...

Microsoft Windows Sony PlayStation 2 Xbox 360 Sony PlayStation 3 Sony PlayStation iOS Nintendo Wii Nintendo DS Mac OS X Amiga Super NES PlayStation Portable Xbox GBA Nintendo Entertainment System Sego MegaDrive Android GameCube GNU/Linux Game Boy Saturn PlayStation Vita Nintendo 3DS Nintendo 64 Sega Dreamcast Game Boy Color Sony PlayStation 4 Wii U Sega Master System Sega Game Gear

... I can play

Postal 2

Postal 2

2003  First-person shooter - GNU/Linux Mac OS X Microsoft Windows - multiplayer  Single player  
 Get game Postal 2
Postal 2 - Wikipedia Postal 2 (stylized as Postal²) is a first-person shooter video game by Running with Scissors, and it is the sequel to the 1997 game Postal. Both are intentionally highly controversial due to high levels of violence and stereotyping. Unlike its pre ...   more on Wikipedia
Quake 4

Quake 4

2005  First-person shooter - GNU/Linux Mac OS X Xbox 360 Microsoft Windows
 Get game Quake 4
Quake 4 - Wikipedia Quake 4 is the fourth title in the series of Quake first-person shooter computer games. The game was developed by Raven Software and published by Activision. Raven Software collaborated with id Software, the creators and historical developers of prec ...   more on Wikipedia
Borderlands 2

Borderlands 2

2012  First-person shooter - GNU/Linux Mac OS X Microsoft Windows - multiplayer  
Borderlands 2 is a truly wacky FPS where you shoot everything that moves, kill it, loot it and move on to face another enemy. You will be able to play as one of four classes: the Siren, the Commando, the Gunzerker, and the Assassin. To truly succeed, you will have to master what your character does best. Only then you will be able to rip through the Borderlands 2 world on your way to glory. If playing solo isn't your thang, feel free to play in Co-op Online or on LAN.
 Get game Borderlands 2
Borderlands 2 - Wikipedia Borderlands 2 is an action role-playing first-person shooter video game, developed by Gearbox Software and published by 2K Games on September 18, 2012. It is the second game in the Borderlands series and the sequel to 2009's Borderlands. The game was ...   more on Wikipedia
Return to Castle Wolfenstein

Return to Castle Wolfenstein

2001  First-person shooter - GNU/Linux Mac OS X Xbox Microsoft Windows Sony PlayStation 2
Return to Castle Wolfenstein is a timeless classic developed by Grey Dog, that has you lead the way on a quest to stop Nazi Germany and ruin their evil plans! In single player mode you seek to strike the Third Reich to their core by gunning down Heinrich Himmler, the head of SS. Join other players in multiplayer mode and form your own Allied force to fight the Nazis in WWII!
 Get game Return to Castle Wolfenstein
Return to Castle Wolfenstein - Wikipedia Return to Castle Wolfenstein is a first-person shooter video game published by Activision and originally released on November 19, 2001 for Microsoft Windows and subsequently for PlayStation 2, Xbox, Linux and Macintosh. The single player game was dev ...   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!
 Get game Quake II
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