If you want an excellent action game on the Genesis with a fantastic soundtrack and graphics that rival the SNES, look no further. The levels of Mega Turrican are very gory and gross looking, adding to the creepy atmosphere of this game.
The gameplay of Mega Turrican seems to be improved from the first game (I haven't played Universal Soldier/Turrican 2 so I can't speak for that). For one, the difficulty curve is lowered; you finally get an invincibility frame after being hit by an enemy, and the game runs at a proper 60 Hz NTSC, which means no cheap deaths from fast enemies. Otherwise, the platforming and shooting is just as solid as its ever been.
The gameplay of Mega Turrican seems to be improved from the first game (I haven't played Universal Soldier/Turrican 2 so I can't speak for that). For one, the difficulty curve is lowered; you finally get an invincibility frame after being hit by an enemy, and the game runs at a proper 60 Hz NTSC, which means no cheap deaths from fast enemies. Otherwise, the platforming and shooting is just as solid as its ever been.