Fortress is a free multiplayer/singleplayer first person shooter, built as a major redesign of the CAGE FPS (My production too). This dev-version and it isn't playable. You can make your own fortess and fight with other players! In singleplayer mode, if you want, you can make whole map in peace!
FPS: 5 - It's only on my Linux machine. because i've got old graphic card drivers ;(