Kirby in Sonic the Hedgehog is a crossover game that seemingly places Kirby, from the Kirby franchise, into Sonic's world. The gameplay specifics of this unusual combination are not well-documented, and likely requires in-depth research to determine the nature of its mechanics. The game's existence needs confirmation, requiring more research into Sega Genesis ROM sets and game databases.

Kirby in Sonic the Hedgehog

King Salmon - The Big Catch (USA)