I bit more than I could chew with this one, but I was trying to port the game I wrote for the Retro Platform Jam, for 32-bit retro machines (https://montyontherun.itch.io/sub) (DOS, Macs, Amigas) to the Master System and I got close, but I can see that there are too many issues still pending and not enough time.

Surprisingly, the hardest parts are working: 3D graphics (basic but working) and the core gameplay (initialized, but not integrated into the 3D engine yet):

This is using the legacy mode 2 from the SG-1000, but still using and requiring the extra memory in the SMS.

The original:

8bitworkshop.com bugs also didn't help much...but hey, it's a quite good IDE still!

If only we had more time...