Milmo is a platform jumper, but it's 3D. It's free, you might want to try it. Very minimal combat so far for me. Jumping, collecting qu... er.. coins & gems. Figuring out puzzles. Get your own house and there are avatar clothes..
Yeah. I saw a cliff yesterday and jumped off it and couldn't find a way out. I'm really hoping there isn't a lot of dexterity or agility required, because I'm not good at that stuff. Standing I can do, with some practice. ;)