Futuridium is a free, ultra-stylish shooter for PC and Mac from Italian indie development studio MixedBag, in which frugal space pilots must use their reflexes, wits and piloting abilities to destroy a series of massive alien capital ships.
The player's jet travels at a constant velocity, somewhat like a 3D version of Defender. Destroying blue cubes increases a score multiplier, with chains of enemies and cubes destroyed in sequence yielding an additional bonus in points. Once all the blue cubes have been destroyed, the capital ship's yellow power core is exposed and vulnerable to blastin'.
The game is also headed to Linux and iOS, in free and paid flavors respectively, sometime within the next few weeks and presumably at an uncontrollable, automatic velocity.