From Wikipedia
Tiny Toon Adventures: Buster Saves the Day was the first Tiny Toon Adventures-related game released on the Nintendo Game Boy Color. It was released on July 30, 2001 and was developed by Warthog and published by Conspiracy Games (now known as Comspiracy Entertainment).
Storyline & Gameplay
Buster Saves the Day is a side-scrolling platformer where the player controls Buster Bunny as he puts a stop to the bad plans of Montana Max, who has kidnapped the friends of Buster Bunny. Various characters from the Tiny Toon Adventures cartoon makes an appearance and some of them attempt to stop Buster from saving his friends. Babs Bunny, Plucky Duck, and Hamton J. Pig are among those that Max has kidnapped.
Various weapons are a part of Buster's arsenal, including magic balls that differ in physics and speed.