A lot of fun. The 3d perspective is pretty neat for the time, but it does get pretty confusing as to where things actually are in space, and your character blocks a lot of your view. Enemies can also come at you from behind, so there's a lot of a memorization element to some levels. Can get pretty tiring to look at after not very long; you're probably best off grabbing one of the modern versions that comes with save states, even if you just use that to take a break after a few stages.