Why exported .egg files from Blender aren't loading up?

Actually 1 .blend can store both animation and geometry, this is the project format of the modeling package. What you need at the output is set via the command line parameters.

It would be nice for us to have short videos in addition to the guide… I need to think about it.

You were right ! All I had to do is to set the flag --animations separate and that was it ! Lovely !

This is preferable, so you can combine formats for example. Store the geometry in. obj and the animation in BAM.

So thanks to your hint my Pikachu is now running and jumping and all but it’s still just a silhouette. All white. No textures nor colours. There doesn’t seem to be flag for it besides --textures embed or --textures {ref,copy,embed}

I’ve got 1 obj file in obj directory that I created.

Please note that only Principled BSDF export is supported, and the model must also have texture coordinates. Of course, the specified textures must be available, that is, it is preferable to choose copy.