Ollie's Essential Game is a 1996 video game adaptation of the 1990 tabletop card game of the same name for the Game Boy Color developed by Software for the People! in collaboration with O.L. Dogs and Nintendo featuring soundtrack composed by Arnold Copper and Joseph Mozzamazél.
But in reality...
Ollie's Essential Game is a fake game made entirely by Yellow Fench to showcase original chiptune compositions revolving around original characters and common video gaming tropes.