Supposing this version was released after, that would make the final level here the sequel, of sorts. The level seems strangely easy, with pathways most players can actually expect to traverse. It still needs to be played almost perfectly, but it doesn't seem impossible to complete with one life, unlike the previous four or eight levels.

Personally, I like the ending "see you next time for snakes in space" better than what's shown after the actual "in space" part. Though the cinematic is nice, and likely not something that could be done cleanly on the nes.