This one could be more. Zeroigar is the only shoot'em up ever released for the FX. It's a pretty straight forward vertical shooter. Nowadays you can see this game has gone to ages. The enemy patterns a really simple and old-school. The game balance isn't that great, because it's very hard to survive once you died and lost all your extras.
The bosses are quite impressive ones. The gameplay is fast and there's hardly any slowdown during the game. The sounds is average. You can choose between Arcade / Story / Time Attack Mode.
Don't get me wrong, I recommend this title for anyone who is into the FX and likes Shoot'em ups (also because it's the only one of its kind).