PMD: Explorers of Fortune

An enhancement hack meant to preserve the vanilla game's experience, while still adding a bunch of new content and QoL! You can expect to see:
-Over 250 new Pokemon
-Over 100 obtainable Shiny Pokemon
-29 regional variants
-A massively expanded starter list+Shiny starter chance
-Several new dungeons
-A handful of new NPCs
-Fairy type
-11 new moves
-QoL features such as togglable complete team control, experience share, and move shortcuts
-new sidequests
-mega evolution and other form changes

And so much more!
Requires a clean US ROM