This is such a cool game! You can just feel your brain cells expanding as you play. Since no reading is required and play involves pattern recognition, even younger children (maybe age 6 and up) can learn to play and beat the grownups!
If you play the online daily game, you might get lucky and win one of the other “Set People’s” card games. They draw a winner randomly every week from amongst all the players. Let me know if you win, since I never have!