i don't really need high end features.
...but some features would be nice of course. like: it should be useable with a scripting language instead of c++, it should have built-in physics with newton or bullet (not ode! i don't like it. bad experiences.

is there even something like that?

there seem to be lots of open source rendering engines but in the field of complete game engines the open source stuff seems to be a bit lacking. or am i wrong?
edit:
the blender game engine isn't that bad but i don't like the logic brick concept. i would prefer 100% python scripting. and it has some problems with publishing...
http://code.google.com/p/gamekit/
this looked promising a while back but i haven't followed it for a while. what is its status? did it make a lot of progress? last time i checked they seemed to have lots of problems with ogre and irrlicht and they started animkit or something to work around them.
what about panda 3d? does anyone have experience with it? (i don't like that it uses ode for physics.)