Smokin’ Guns (SG) is a first-person shooter video game. Smokin’ Guns is intended to be a semi-realistic simulation of the American Old West’s atmosphere and was developed on id Software’s Quake III Arena Engine. Gameplay as well as locations are inspired by Western movies, particularly those from the Spaghetti western genre. Smokin’ Guns’s codebase is free and open source software, distributed under the terms of the GPL; it is built upon ioquake3, an upgrade of the original Quake III engine. The artwork and other media are licensed under a proprietary non free license. Smokin’ Guns was originally developed by Iron Claw Interactive under the name Western Quake 3. From 2001 to 2003, Iron Claw Interactive released two versions (beta 1.0 and beta 2.0) as modifications respectively total conversions for Quake III Arena. Further development by Iron Claw Interactive stopped after the release of version beta 2.0 in 2003.The development was continued by a new team in 2005 in cooperation and with the blessings of Iron Claw Interactive. The new team released two additional versions of Western Quake3. The new team, going under the name of Smokin’ Guns Productions, released Smokin’ Guns 1.0 as a standalone version based on the open-source Quake III engine in January 2009. The name of the game was changed in order to avoid legal problems as well as to reflect the work of the new team since it took over development in 2005.