How about the Capcom game Monster Hunter

While the "Third Games" of each generation of Pokemon (i.e. Japanese Blue, Crystal, Emerald, & Platnium) plus Yellow and Fire/Leaf & Heart/Soul are this Trope; given the fact that Original Gold/Silver, Ruby/Sapphire, Diamond/Pearl and Black/White introduce new Gym Leaders, new Pokemon, new Battle Mechanics  ^*

^{G/S added 2 types, R/S overhauled the stats system and added Abilities and Natures, D/P made type and attack/defense stat independent, and B/W has psuedo-3D}

, and, with the exception of G/S, new villains, Those 4 pairs would be better listed as Mission Pack Sequels.

I'm not sure the Lunar: Silver Star example is this trope. Those are ports and remakes demanded by the fans, released when the previous system dies (When it became clear the Saturn was dead in the water, they ported it to the Playstation). Furthermore, we GOT a sequel before those ports were made - Lunar: Eternal Blue.

No mention of ANY of the Mega Man series besides Legends in the Capcom folder? Despite the fact that Legends actually averts the trope? What about Battle Network and Star Force? Why are those not mentioned on here?