Dino Breeder 4, a continuation of the Dino Breeder series, was released in Japan for the Game Boy Color. This installment likely built upon the gameplay of its predecessors with additional dinosaur species, breeding mechanics, and likely new challenges in caring for and evolving the creatures.  Information on the developer and specific details is required for a thorough introduction.

Dino Breeder 4 (Japan)

Densha de Go! 2 (Japan)