Play Hamster Monogatari Collection (J)(Rising Sun) Online

Hamster Monogatari Collection is a Japan-only Game Boy Advance release from Rising Sun that came out in the early 2000s, a time when quirky pet sims and virtual companions were finding a comfortable home on handhelds. It never saw an official English localization, which makes stumbling upon it feel like uncovering a small, peculiar artifact from that era.

You control a hamster, guiding it through daily routines like feeding, bathing, and playing with small toys. The main goal is simply to care for it and watch it grow, but there are a few unusual mechanics that stand out. You can dress it up in tiny outfits, including little samurai armor, and one activity involves blowing into the Game Boy Advance microphone to dry it off after a bath. The pacing is slow and repetitive, focused more on interaction than challenge, and it doesn’t ask much from you beyond paying attention. Playing it feels like tending to a small, energetic pixel pet that has its own silly personality.