Catz - Your Virtual Petz Palz on Game Boy Color provided a virtual pet experience. Players likely cared for and interacted with virtual cats. Gameplay probably involved feeding, cleaning, and playing with the cats, typical for the virtual pet genre. The European release suggests language localization for European audiences. The developers and publishers would need to be found via game release records for the European market.

Catz - Your Virtual Petz Palz (Europe)

Caterpillar Construction Zone (USA)