Getting really old school here. But as a kid I loved the old arcade classic Crazy Climber. The graphics are nowhere near the level of today's games but I think it holds up pretty well for an old time game.
I don't think I actually have any ports of Crazy Climber though I do remember playing the arcade game. I do however have a game called Alpiner for my TI-99 that was sort of a clone of Crazy Climber just like how Munch Man was a clone of Pac-Man on it.