As my first act of defiance to the DOSBox forums, I'd like to give some info about a game that is very unknown to alot of people.

It's name is 3D Construction Kit (Europe) / Virtual Construction Studio (NTSC regions). It was based on the Freescape game engine, which is regarded by many as the very first true 3D FPS technology ever to hit the market. With it's debut in 1987 with the eye-popping game Driller, it was ported to the Commodore 64, the Sinclair ZX Spectrum, the Atari ST, and all IBM compatible PCs, among other systems. And what's most remarkable is that though the technology was in a sense superior to DOOM (which came out 6 years later) and most DEFINITELY superior to Wolfenstein 3D (which was 4 years later), it could run fairly well on much lower end machines, including but not limited to the 8086 @ ~4.77MHz. (Note that I didn't say you would get framerates higher than 5FPS in a detailed area...)

Three and a half years later, 3D Construction Kit was released. People were mindblown by it's ease-of-use and it's remarkable appearance, as the user was presented with a fully 3-dimensional flyby view of their worlds as they were constructed. Though the controls were not intuitive (;) ) it was probably the greatest game creation program ever conceived in it's decade.

It ran in CGA,EGA,MCGA,TANDY 16 color, and VGA (only in 3DCK2), and made brilliant use of the 640KB of conventional memory still in use on some PC's at the time (a cube primitive was only 26 bytes, meaning you could create several large detailed rooms in about 1.5KB of memory)... It's really a shame it went unnoticed, and was eventually buried in a never-ending zone of abandonware.

Now, how to run it in DOSBox. As I'm sure is true with a few other games, I recommend you mount whatever "drive" you run the toolkit off of as the C drive (I've experienced some strange issues running it as any other letter). The original toolkit doesn't support many color options, and I don't even think you can set "machine=mcga". Just set whatever you think looks best. The minimum cycles is around 700 (which roughly emulates an 8086 ~4.77MHz according to DBGL), but I seriously recommend 1500. Too many makes the editor run way too fast, and too few of course bogs down the renderer to shit. In 700 cycles, 40 primitives is enough to get 2FPS.

There shouldn't be anything else you need to do to get it to run. It's an awesome game and it works 100% in DOSBox 0.72 (only one I tested with) with no errors at all as long as you mount it properly. Have fun.

GAME DOWNLOAD (abandonware):
3D Construction Kit (original)

PS: I apologize if this is the wrong place to put this. 😒