Otto's Ottifanten - Baby Bruno's Nightmare is a European Game Boy release featuring multiple language support (English, French, German, and Spanish). It likely belongs to the children's game genre, potentially a puzzle or adventure game involving Otto's Ottifanten characters. The game's plot would revolve around Baby Bruno and his nightmarish adventure. Visuals were likely simple and colorful, given the target audience and the technical limitations of the Game Boy.  Specific developer and publisher details require additional research.

Otto's Ottifanten - Baby Bruno's Nightmare (Europe) (En,Fr,De,Es)

Othello (Japan)