How about this? I don't know my arse from my elbow when it comes to 3D but "Linux" source code is available.
Surely it's just a case of running make and his pals and hey presto! Okay! I joke."All it takes" is a dev to make/port a basic engine supporting gles that loads 3dmax or blender files. Then it could just start with a basic "TAG" game and move onward from there. Enough 3d guys around here to provide content, heck even i could make some stuff. But the first 3 words point out the problem.