The loyal customers of mobile game Clash Royale (developed by Supercell) were invited to Common Ground to enjoy the special gifts of limited edition and dance performances. A ‘pop-up truck’ with dancing goblin vending machine was the main installation of this event, and Instagram photo printing machine, photo wall, messaging boxes were also prepared for the game users. Supercell, especially, distinguished the current users as ‘Royale Family’ offering exclusive benefits, which succeeded in the higher brand loyalty and lower drop-out rate.