Chromium BSU is an Open Source and free-of-charge Shoot'em up game. It is available for Unix-Linux and Windows platforms. However it differs from all other shoot'em ups in some points. Here, your goal is to destroy all enemies and not to allow anyone pass behind you. If you allow, each enemy ship cost you one life! You have to destrot all of them at all costs! Shoot, crash, self-destruct and do whatever it takes to destroy'em all! Have fun!