Mind Candy announced plans last year to develop two Moshi mobile games in partnership with Gree.

WSJ: Feathers Fly as New Rules Loom for Kids' Apps

The giant eggs feature some of the UK's best loved children's characters, such as Moshi Monsters, Peppa Pig and SpongeBob SquarePants.

BBC: Charity egg goes missing from Glasgow city centre

Toy maker Hornby is hoping 2012 Olympic merchandise and a range of Moshi Monsters pin badges will help it to offset a slump in its UK profits.

BBC: Hornby is pinning its hopes on Moshi Monsters pin badges