Trying to remember a sega mega drive game. I'm in the UK and must have picked it up at a car boot sale. I remember two things about it;
You play as a muscly shirtless man with a sword. Side scroller fighting animals I think. Start outdoors in a grassy mountain area and can go inside caves. I remember the music being cool.
The title had the main characters name in it, which was a single word game. I think it was a historical name, maybe beginning with G.
It sounds a bit like Danan: The Jungle Fighter, but that's a Master System game...
EDIT: It might also be The Story of Thor (aka Beyond Oasis).