Xonotic is a shooter game released in 2011 designed and developed by Team Xonotic. Xonotic can be described as a open source game and can be played on the following operating systems: Linux, Free BSD, Windows, Mac OSX. Xonotic is also a multiplayer game.
“Xonotic is an addictive, arena-style first person shooter with crisp movement and a wide array of weapons. It combines intuitive mechanics with in-your-face action to elevate your heart rate. Xonotic is and will always be free-to-play.” - Team Xonotic