I'm currently working on a RPG engine, well, you can select a player graphic (any size) and walk around... also there are other characters ("enemies") which just walk around at the moment. Of course all moving objects collide the map and each other object, and all can walk in 8 directions and are animated .
That's it so far, but when finished it will be like Unreal, an engine you can use for your own projects (Fully customizable, script system,...)
I will -of course- share the source, if anyone's interested to already see it just mail or ICQ me...
Oh and I made another site update for those who are interesed ^_^