User blog comment:Kogath/Monster Hunter X Discussion/@comment-19936604-20150601073236/@comment-184612-20150603075305

Um, no. It went MH1 -> MHG -> MH Portable.

MH2 -> MHP2 -> MHP2G

MH3 -> MHP3 -> MH3G

and now, MH4 -> MH4G -> MHX

There isn't a "set release style" for this series. The only thing in common are that there are expanded versions (the G/Ultimate games) of base versions, and then there are the offshoots. While MHX is still in the fourth gen, it is its own separate game, not a continuation of a previous game.