One plucky teenager has already become a millionaire before celebrating his 16th birthday, thanks to a card game he created ...

A teenager has become a millionaire after inventing a best-selling card game when he was just seven years old. Alex Butler, ...

Alex Butler, 15, and his parents sold his original card game Taco vs. Burrito to PlayMonster last month - and the teen says ...

Alex Butler invented a wildly successful card game called Taco vs. Burrito when he was only 7-years-old — which has turned ...