Crazy Balloon is one of those early games that was simple, yet terribly difficult. It was early days, so you're limited to four balloons (players), and frankly, you've got to be some kind of arcade genius to get too far.
The other cool thing about this game is that the graphics are essentially non-existent (hopefully the elaborate artwork of the new Bezel distracts you from being too bothered by the look), I remember programming a version for the Atari back in the day using BASIC.