This game is inspired by a game called Scannerz, where you would scan barcodes and get monsters to fight other people with. In a similar fashion, players would use their phones to capture photos of everyday things,selfies included which would then reward them with a unit relating to their photo.

As an example, if a player were to take a photo of a dog, they would be rewarded with a beast or animal unit. The player could then use that unit to defend or attack their base that they build in conjunction with the pictures they take. Meaning players cannot build say a bestiary until a photo of at least an animal has been taken.

The game will take a similar format to other base building/war games on the phone format such as clash of clans. Players will build their based using some generic buildings/defences then unlock new units/buildings when they take pictures of things

source: http://www.museumofplay.org/online-collections/images/Z004/Z00417/Z0041749.jpg