My project also pause due to massive workload of my real job.
I recently purchased the Leadwerks Engine, the real-time shadow is awesome and fun to play with, if I need to get the quality like that in Unity I need to buy the Pro version, which cost 10 times more, now I only paid US$150 to get full scene realtime shadow. Luckly my old P4 and 6800GT still run fine with it.
And the command set is so similar to Blitz3D, which is good as there are lot of code archive in B3D site ;D
I don't know when I will resume my project, but I will consider to convert it to Leadwerks Engine.