In internal useSYSTEMS

SXP Character Engine

Turns one 3D character into a game-ready actor, either as a 3D model or as 2D sprites in eight directions.

SXP's female and male starter characters standing idle in eight directions, from the production bake — Real bake output of SXP's own starter characters: the corrected bake accepted as the production baseline on 27 September 2026

Why it exists

So one character can serve several games, every rebuild comes out identical, and every output can be traced back to its source.

Where it stands

Used inside SXP. Baking 3D characters into 2D sprites is its production path for games, and ISEKAI CROSSING's starter characters come from it.

This is a description, not a window. Nothing on this site connects to the system, and no live data from it is shown.

How it works

VRoid / VRMA character SXP authored in VRoid Studio
Character EngineReduce, atlas, record provenance
MotionRetarget a CC0 animation library
Game-ready actorOne actor, two outputs
3D runtime or 2D spritesA GLB for Godot, or 8-direction sprites
SXP gamesFor example, ISEKAI CROSSING's starter characters

What it does

Imports VRoid (.vrm) models, reduces triangles, bakes texture atlases and compresses them for games
Retargets an 86-clip CC0 animation library onto each character, with runtime foot placement
Bakes eight-direction sprites from one fixed camera: a 512-pixel master with 256, 128 and 64 sizes
Bakes a whole character set together and checks that every member shares height and ground line
Rebuilds are byte-identical, and every input's origin is recorded

What it does not do

AI image and frame generation are not implemented
Visual craft is still judged by a person; the engine does not approve its own output

Before and after the fix: the starter characters' hair and clothing, once folded in, now keep their authored shape — Before and after: the earlier bake (24 September 2026) turned long hair into a short bob; the corrected bake (27 September 2026) keeps the authored shape