Necessary to play the game in the method with the most longevity, this is the version of flashpoint needed in order to play Moshi Monsters through it. After downloading, you will need to search for "Moshi Monsters" and then download from there.

Link is to Flashpoint Infinity, the version of Flashpoint where you will have to download Moshi Monsters and other games individually rather than have them all stored at the same time.