HACKs
Calaveras
A game where you play ancestral guardians from beyond the grave that for one reason or another have tasked themselves with protecting their descendants from supernatural influence or harm.
One Piece Prime
Basic outline that allows you to play and narrate a game set in the One Piece setting using Cortex Prime
Pokémon Heroic Roleplaying
This is a Pokémon game that uses Marvel Heroic Roleplaying as its basis.
Supplements
Marvel Heroic Prime Supplements
A series of datafiles for X-Men, Teenage Mutant Ninja Turtles, Spiderverse, Guardians of the Galaxy, Fantastic Four, and Avengers. Great supplements for Marvel Heroic Prime!