Hamster Monogatari GB + Magi Ham Mahou no Shoujo is a Japanese Game Boy Color game. The title indicates a story about hamsters ('Hamster Monogatari') with a possible magical or fantastical element ('Magi Ham Mahou no Shoujo' likely translating to something like 'Magic Ham Magical Girl').  The game might feature RPG elements, adventure elements, or a unique blend of gameplay.  Without further information, the specifics of the plot, mechanics, and development team are unavailable.

Hamster Monogatari GB + Magi Ham Mahou no Shoujo (Japan)

Hamster Club - Oshiema Chuu (Japan)