Torus Trooper

Having a similar visual concept to the old Tempest game, Torus Trooper is a fast freeware 3D scrolling shooter. The player pilots a ship which accelerates into the screen, steering around the inside of a never-ending tube, shooting enemies. Every time the player passes or destroys a certain number of smaller ships, he is presented with a tougher boss, the destruction of which will reap precious seconds to boost back up the player's diminishing gameplay timer. Once the player runs out of time, the game ends.