Cube was early on one of the first open-source first-person shooter games designed around its own engine. The 3D graphics for Cube were not the best, but development of this game had been going on since 2001. Based upon the Cube engine was then the Sauerbraten game that was also referred to as “Cube 2” with its engine being redesigned. Now though another game is emerging and its engine is derived from Sauerbraten. This game is called Blood Frontier and in this article we have a few screenshots of this game, which is working its way towards a stable release for the open-source community.