I have seen the cube engine and have played around with it some, it is kinda of confusing, however I am wondering if you can use it to make your own shooter games and if you can make them look better then what the cube graphics look like
I've played the FPS that they made with Cube, but it was maybe a year ago. I haven't seen the latest updates to it, but I think the biggest deal with Cube is that you can make the game levels in-game. I am not aware of any games based on Cube besides that FPS, but I imagine they exist.
After some googling: http://imppd.tripod.com/fusion/index.html Edit: Download: http://www.fileplanet.com/145734/140000/fileinfo/Cube---Fusion-Mod Seems like you need to be registrered at fileplanet to download.