Pumuckl's Abenteuer im Geisterschloss is a German Game Boy Color release based on the Pumuckl character. The exact gameplay mechanics are unknown without further information.  It is likely an adventure or puzzle game tailored for a younger audience. Determining the developer and publisher would require additional investigation into German Game Boy Color game releases.

Pumuckl's Abenteuer im Geisterschloss (Germany)

Puchi Carat (Europe)