GURPS sounds right up your alley, though it is a pretty rules heavy game. There are also a few other excellent options, starting with the ORE system, particularly the Nemesis and REIGN implementations. Nemesis is a free action-horror game with a really solid mechanical underpinning, not too much crunch (though it's not rules light), and some really cool features. It is also free. REIGN is a fantasy implementation of the same system which strips out the horror and adds in lots of organizational interactions and political intrigue. It is also not free. You also might like Legends of the Five Rings, which is a fantasy game heavily inspired by the history and mythology of Japan. Then there's Burning Wheel, which is an excellent fantasy game that is heavily inspired by Tolkien's work and does a much better job with it than D&D ever did. It's extremely crunchy, but the organization is actually pretty well done, as opposed to the mess that is Shadowrun organization.

Honestly, the biggest problem with your request is that it's still pretty broad. Feel free to narrow down to a particular genre, and we can probably come up with another few games that can work in it.