Until the BMax 3d module makes an appearance I doubt this will change - most of what's appearing recently from the Blitz stable is 2d puzzle games.
Hmm.
What about KeePeeUppy? (finished and released a couple of months ago)
What abouy qoob? (version .10 coming very soon)
What about Blokatak? (WIP)
What about Watchaball? (finished and released a few months ago).
All 3D Blitz3d...