Many years ago, I played with drawing a 3-D maze under OS-9 on my Radio Shack CoCo 3. That demo is on the NitrOS-9 “Ease of Use” release under the name “semaze“. It lets you wander around a simple line maze:

There is even a map you can bring up with “?”:

As I mentioned years ago on this site, I had played with turning that into an OS-9 version of the classic Phantom Slayer 3-D game on the CoCo 1. I got as far as having my maze with a “phantom” in it that would wander around:

But the oddest version was probably me putting the Pac-Man maze into my 3-D “engine” and then deciding to put dots around it, and make it refresh every half second or so, making it a “real time” game. With a prototype ghost (which appeared just as a large circle) wandering around!

And bringing up the map showed the Pac-Man maze:

In the days before the Internet, the only way I would have been able to recreate this map is if I had access to an accurate home port (I did not), or a picture in a magazine (maybe). I am guessing I based it on some CoCo Pac-Man clone with a fairly accurate maze.

How well did I do? Here is my CoCo version, then the actual arcade game, and the Arduino TV-Out version I was working on a decade ago (very accurate, down to the tiles).

I can see a few errors, like the bottom walls under the power pellets going into the maze an extra tile. And the dots are off. Today, I understand how the Pac-Man maze is laid out with tiles so it would be much easier to recreate my 3-D “DotMaze” game with an accurate map.

Maybe I will.