@Nine I think red and blue had the same sprites? then yellow had some differences
we could also be wrong though
In any case, all the mechanic changes and bugfixes (yes, jp red/green are even buggier than red and blue) from blue are in every western release
@Felthry Oh yeah the bugfixes are for definite. Red/Green had some... pretty bad spritework it turns out. the changes to them were p. much for the better.