There seems to be a bunch of game engines out there for non-rpgs. Does anyone have any favorites?

I've used Mulitimedia fusion 2, but I didn't really like it. it seemed super limited. I want to get something else, but I'm not sure what would be good.

Game Maker or Sphere are pretty good. There robust engines that the only limitation is your programming ability.

Game Maker. GML is easy to learn and like Rukiri said, the real limitations are your own abilities.

There's also construct.

Hands down the best story games like The Longest Journey, Myst, and other adventure games. They do not act, so that the focus of a pair of good games, they are completely focused on the story.