I didn't mention Flashback or ANother World, because I think they are a little more than "platform" games... if they can considered platforms, add them to my list above
I think Heart of Darkness is a GREEEEAAAAATTTTTT game .. I had it in my PC, but unfortunately it stopped working
It sometimes remembers me Another World.
Blackthorne is from Blizzard (Published by Interplay) and it's available on Snes too. It's a very good game in the flashback mood, I recommend it.
I Don't like Dark Castle that much.. I played the Amiga and Mega-Drive version, it played much like a very bad spectrum game (no offense to speccy fans
Lost Vikings looks better on Amiga.. at least it looks better in Amiga with my TV, than in PC with my monitor...
And ToeJam & Earl 1 is not a platform game.. it's a kind of arcade-adventure game. Toejam & Earl 2 is a good platform game, if a little too easy. Both games are a lot laughable (Mainly the 1st one), and I recommend it at least for some good laughs..