First of all let it be known that the Genesis and Super Nintendo "versions" are in fact completely different games. The Super Nintendo is a platformer + beat em up, whereas the Genesis version de-emphasizes platforming and focuses more on shooting, though the gameplay is still styled like a beat em up where you have to KO all the enemies before you can move to the right, and you can do melee attacks when enemies are close. The Super Nintendo version is pretty good, but for me the Genesis version is mostly truly great. Sick graphics with cool 3D effects, badass dark and heavy music, and it's one of those games where your shot is more powerful if you wait a couple seconds to attack which I usually find quite fun. Despite being released in 1995 it's about as difficult as the average NES action game. If you can handle that though, definitely give it a go. I'm only docking my rating half a star because some of the levels go on for too long, like the flying shooter level which goes on for about 15 minutes before introducing a three-phase boss fight.