Yes Unreal Engine loads a part of the engine and I can not go down in weight ...
I made a web version that works however it does not have a post-process because during the jam I just learned (and it's the goal of a jam too) that GLES2.0 does not manage the scenesTexture in post Process ... so that it is functional but graphically the outline effect is not available ... now I'll know for the next time not to use post process for webGL
Thanks for playing