Maybe something like DK64 isn't really possible without having a controller. I do have a couple of basic game controllers for the PC, but they are VERY basic -- really not good for anything but a classic-style RPG.
That being said, perhaps it's more realistic to look for something like the old Donkey Kong Country games -- loved them then and still do! Finding hidden areas was always exciting, and the gameplay was a lot of fun.
Does anyone have any suggestions? I've posted multiple platformer games (including today's topic for Rayman Origins) but I haven't actually gotten around to trying any of them