They can't release old betas of properties not owned by 3DR, even if the beta in question was once owned by 3DR, because when it was sold they sold the rights to everything. That includes these old betas. So a Q Studios build of Blood, even if it was called Horror 3D at the time, is still owned by... whoever owns Blood.
Yause, on 18 April 2014 - 11:06 AM, said:
It's a technicality. After finishing Duke 3D, the team expected to work on a sequel immediately, so they began prototyping on the Build Engine - adding voxels, creating experimental levels with room over room, etc. Simultaneously, they were assisting on Shadow Warrior (which used the same enhancements) as they prepared, although some of the staff was temporarily whisked away to make the Plutonium Pak.
Plans changed once 3D Realms licensed the Quake engine. Nevertheless, some developers trace the origins of DNF to the Build Engine tests.
I don't see why they would prototype on the Build engine at all, they knew even in the 1.3D release of Duke Nukem 3D that the engine was dated. (
I ain't afraid of no Quake. was a testament to gameplay > technology, but everyone knew the industry was about to enter a vortex of one-upping each other with graphical advances.) Were you a developer or do you have some kind of sources for this theory?