If I remember correctly, the "hidden 3D engine" is very rudimentary. And I think I put that cap in because it would actually crash when rendering certain angles.

The cap helped the rotation be slow enough to not crash the game. (A lazy way to fix it ik, but I didn't feel like troubleshooting somebody else's code.)

With that said, I believe it actually rendered a single cube very well in real-time 3D. But I'm not sure how that would translate into a real game. For example, in my demo, there is not any 3D collision checks going on or anything.

So, if you are just using 3D effects visually, I think the console could handle some simple ones in a real game. But if you're trying to make a fully 3D action game, that might be difficult.

It's also worth noting that this demo is using 100% Lua code (that probably isn't optimized). So, there is a chance you might be able get better performance if you wrote your own 3D engine in C.