McDonalds' Happy Table for Children

Singapore McDonalds have just started a Happy Table campaign for children to have fun. Those Happy Table have hidden NFC tags to form a "NFC race track". When the children have a NFC phone, they can enjoy the NFC-McDonalds racing game. The game itself seems great and the graphics look nice. I wonder if naughty children will mess up, and if the trays on the table will block the way of the "racing cars"... but I still believe that there is a potential as children should be interested in the game.