The follow-up to Wario Land: Super Mario Land 3 on the Game Boy is this 1998 release for the Game Boy and Game Boy Color.
Wario Land II was initially released for the black and white Game Boy, but was re-released for the Game Boy Color six months after its initial release and it is the Game Boy Color version that I’m focusing on here (because it looks much better in colour than in monochrome).
The King of Grabs 