The Mothra Tamagotchi (Mothra no Tamagotchi, or simply the Mothra) is a licensed vintage Tamagotchi that was released in Japan in December 1997 during the release of the movie Rebirth of Mothra II.

By interacting with and caring for it, Mothra gains “Justice Power”, which allows her to evolve into different monsters depending on the amount that she maintains. The game contains “hidden characters” for Mothra to evolve in to, which require specific actions or levels of Justice Power to obtain. These characters include the Elias twins Moll and Lora (called “Mora” here), Ghogo, and Godzilla himself. The game also features unique stages of Mothra and Battra’s evolution, including individual baby, larva, and grub forms.