Make sure the kids (and grownups!) stay sharp this summer.  Get your critical thinking going with these two fun-filled, award-winning games from Marbles the Brain store. Rush Hour has a fun game board based on pictures of traffic jams. Plot your escape as you slide cars and trucks out of the way. You'll practice concentration, spatial awareness and sequencing abilities. Quoridor, a Mensa Select Winner has simple rules but requires strategic thinking, planning and problem solving skills. Recommended for ages 8 and up, these games will challenge minds young and old.