after doing some research this is not official here is a quote from the sonic retro page "3D Maps are stored as little 2D grids on the BG2 and BG3 maps. They are made into fully-fledged 3D worlds on runtime. The texture for the bottom of the platforms are stored as sprites. Tiles are represented by a byte value and go along in rows. When one row is done, the tiles go on to the next. There are 2 maps for a battle map; the texture map and the ground map. The texture map contains the textures above the ground (except in the Crater map), and the ground map contains the textures and shadows at ground level."

are we sure this isn't just a recreation using the game's sprites??
either way, still neat.

@LexDoesGames perhaps they didn't realize sonic battle uses 3d models so they thought this was custom

@LexDoesGames thanks for the fun fact, this would be the second 3d model of GBA, also of scenenario of Monkey

Goodness, without the tiny and low quality GBA screen, this really feels empty

@RadFox IIRC this is actually a model from Sonic Battle, just that, for whatever reason, the staff didn't accept it.

Time to party!

A Sonic Battle inspired model, that's a new one but definitely very cool