Sega Master System / Mark III / Game Gear
Remember Zaxxon? The first forced perspective coin-op, which was praised more for its fancy graphics rather than the uninspiring gameplay. Well forget all that, as this 3D version (utilising the also rather uninspiring 3D glasses) takes a behind-the-ship viewpoint with the enemy screaming towards you at a great speed of knots. The problem with this is that some things are obscured by your ship, leaving you eating laser death and not knowing why!
This, matched with the not-too-amazing graphics and sound, and the rather dud gameplay, make this a game to leave well alone, even if you're the most avid Zaxxon nut going.