@ry Aww, that means it's prolly gonna be a pain to import the other Earthbound/Mother maps, I think some of them had unique models in them

This remake in particular is made mostly with canvas items, which was a pretty long and tedious process (I made it in around 2-3 weeks in a Condo a while back), but it helps if you can find an item on the workshop to use as a kind of makeshift measuring stick to get the dimensions right (I use a red couch model from HL2 and line them up in GMod and TU).

I haven't tried this method, but as an alternative you could maybe try importing a Source map as workshop furniture and using that as a base. You might run into issues with importing and you'd have to make your own collision, either with canvases/blocking volumes or by separating each surface into different objects in your modeling software, but it could be a bit more efficient than making the whole thing with canvases like I did.

Neat.
Also, I'm just wondering, how difficult is it to port Source-based maps into this game (pretty sure the engine is UE4)?