Don't you mean Pac-Land (Lynx, Pc-Engine)and that SNES game Pac-Man: the New Adventures or something like that). Pac-Mania is more Pac-Man in a isomatric playfield and the ability to jump. Pac-Mania is also on Megadrive btw.
Right, you can only jump with pacmania. I haven't played it for ages, so my brain is a bit rusty. Pac man also got a game on the playstation that was mostly platform.