Moshi Monsters

Moshi Monsters is a British children's web browser massively multiplayer online role-playing game (MMORPG) aimed at children aged 6–12, with over 80 million registered users in 150 territories worldwide. Users could choose from one of six virtual pet monsters (Katsuma, Poppet, Diavlo, Luvli, Furi, and Zommer) they could create, name and nurture. Once their pet had been customized, players could navigate their way around Monstro City, take daily puzzle challenges to earn 'Rox' (a virtual currency), play games, personalize their room and communicate with other users in a safe environment.

The servers for the game were officially closed on 13 December 2019, due to the game requiring Adobe Flash Player, which ended support on 31 December 2020. The characters were reused in Moshi, a sleep app also aimed at children.

In 2025, Mind Candy announced that Moshi Monsters would be relaunched as a mobile game in 2027.