I remember reading about the Genesis Engine in college. For what it's worth, I think it's awesome how you've worked your way to Voxel Quest. Good luck.
There's something magical, as a young programmer, about compiling an open-source 3d engine and walking around in the demo.
Although in my case I never did more than compile Genesis and tweak a few variables in the physics code before recompiling. (I ended up learning from the Torque Game Engine and its forebears, because they had a scripting language and sprawling outdoor terrains with multiplayer).
Those were the days :-)