Remember back in the day, when you would spend hours in an arcade playing Asteroids? Disappointed that you couldn't take the game everywhere you go? Well, twenty years later there is a solution for you.
In the Android marketplace, there is a free video game called Radiant Lite. Lite the astronomical concept, this game is kickass. In the official description, you get to "Take your stand against the alien horde in pure arcade/action space shooter" along with being able to "Cut through hundreds of creeps to face giant monsters in unique bossfights. Collect special weapons and power-ups, upgrade your ship and save your homeworld!"