Nearly 20 years after the game's release, we finally have some sort of modding tool to work with. Thank you for all of your hard work and I will definitely be keeping up to date with the progress of this tool!
Over the past month I've been documenting more file formats, but under a week ago we have received a game-changer. We have obtained the PSX Frogger source code. Unfortunately, I am not permitted to send it to anyone else, however this will be incredibly useful as we don't have to reverse engineer any more, all of the information we need to construct a level editor is in there. There are loads of debug features, some cut content, and other things. I will do a full article on The Cutting Room Floor on all the cut content when I've organized a list of everything, but feel free to ask me about anything related to Frogger's internals or content, preferably on the discord server. Despite needing to keep the source code private I'd love to share all information I gather from it and answer questions relating to it.
Probably a decent time to give an update. The tool can now successfully extract .MAP to .obj files, but each level needs a small text file written to make the textures correct. We are currently writing these files, and I am currently working on the MOF (enemy model + animation) format.
I'd like to give everyone an update on this project (No, it's not dead!).
Most of our discussion is happening on our discord server, here.
There has been a bit of progress, and discussion of a development prototype disc we may be acquiring. I've successfully figured out most of the file formats, and I've written both a Free Camera mod (Such as what you might see on Boundary Break), but I also have written a map exporter to export maps. Next, I'm working on a new tool which will let us modify literally any file in the .MWD archive. (Textures, title-screen demos, enemies, maps, etc)
Here are screenshots of some of the maps exported with the tool: