Your version is much better than the version made for Mega Drive
Great work, the engine is incredible and has generated a huge range of new games in just a few years. Thousands of new titles, I think Master System also deserves attention in this regard.
I will check if the source code is available and analyze if it would be possible to add an extension version for Sega Master System, as it would certainly take advantage of a lot of what is already ready.
I really appreciate your work, so much good stuff. I'm wondering if I can adapt any SGDK project to my interface engine? I have many projects made with SGDK: a Shinobi-style platformer, fighting games, beat 'em ups, spaceship games... I haven't looked at the source yet, but I'll start doing so now...