Here’s another crown jewel from the Golden Age of video-games. In this simple fixed-screen shooter, where you control a spaceship at the bottom of the screen, fighting off cruel hordes of invaders that get faster and more aggressive every second. Sounds familiar? Yes, back in the day this game was a direct rival to Space Invaders, and according to many it was even better. A notable trait of this game is how it spawned intense competitiveness, with millions of fans breaking thumbs to try and make the leaderboard.