No response to this after a year is wild. I wonder the same..
Viewing post in Adventure Begins - 16x16 Retro Tiles & Characters comments
I apologize, it has been a rather complex year and I prioritized releasing new expansions (interiors, city and characters) and packs (the new dungeons).
I also had some difficulties with godot and rpgmaker as I had no experience with the first and very little experience with the latter (and the tiling system of MZ is quite nice, but calls for an overall rethinking of tiling and formatting, which required lots of time.
The overall result is that I spent quite some hours on both to try and get everything done, but maintime work, relocating and a lot of different things went all together and got me a bit stuck in a loop and I often had to decide how to tackle the next objective.
That being said, as you deserved an explanation, Godot and Rpgmaker formatting for all the tilesets are the next update this month, which I've been working on for quite a while.
Please excuse me again for the lack of communication, but I am alone in this and quite new at lots of this job aspects, other than pixel art itself which has always been my main (and arguably only) skillset.