Cube is a shooter game released in 2002 designed and developed by Dot3 Labs. Cube can be described as a full free version game and can be played on the following operating systems: Linux, Windows. Cube is also a multiplayer game. Cube is part of the Cube series.
“Cube is an open source multiplayer and singleplayer first person shooter game built on an entirely new and very unconventional engine.” - Dot3 Labs