Killer Instinct for the Nintendo Game Boy is a classic 2D fighting game marked by its fast-paced action and combo-heavy gameplay. It's a portable adaptation of the popular arcade and Super Nintendo titles. Players choose from a roster of diverse fighters, each with unique moves and special attacks, to compete in intense one-on-one battles. The objective is to deplete the opponent's health bars through strategic use of combos and finishing moves, called No Mercy attacks. Its combo system and competitive edge define its place in the fighting game genre.