Space Invaders is the grandaddy of retro. It's a simple game with simple graphics, but it has one of the most vital assets for any computer game: gameplay. Modern games have a tendancy to forget this with their fancy graphics and huge budgets. These little alien blobs are all you need!
The more aliens you shoot, the faster the remaining aliens move. If they get too close, it's game over — so shoot quick. And watch out for that flying saucer...
Move left – left arrow key Pause game – P
Move right – right arrow key Quit game – Q
Fire laser – spacebar Mute sound – M