Super Crate Box

The developers behind Super Crate Box state that they want to "bring back the glory of the golden arcade age, when all that really mattered was getting on that high score list". The game sure brings that arcade feel with nice retro pixel graphics and sweet chip music. It's also full of action with many different weapons, unlocks and a lot of enemies to blast. My only real gripe with the game so far is the tutorial at the beginning that you cannot skip and you have to complete before you can move on.

Download and install from http://www.supercratebox.com/