This is the sequel to the first Zanac game. There are different levels and the information board differs from its predecessor in that it has the franchise logo in it and a kind of ranking system. Features all absent in the 1986 release.
Note: there is no Zanac 3. What goes around as Zanac 3 is just a crack of Zanac with a modification to start in stage 0 (which can also be reached via normal gameplay using a warp early in the game)