copyright 2009, The Washington Post WarStone, Duncan Toys, 8 and older, $13-$25. This new trading card game has an old-fashioned twist -- marbles -- that appealed to our third-grade testers. Like many trading card games in the style of Yu-Gi-Oh and Bakugan, this game can get complex, but the kids didn't mind that. The marbles have cool creatures inside. Available at www.warstone.com. Kid Cranium SpongeBob SquarePants edition, Hasbro, 7 and older, $25. Be prepared to act, crack codes, sketch and sculpt to win this SpongeBob-themed game. The fourth-grade testers said that it was 'interactive' and that it 'never got old.' Nina Versus Ninja, Out of the Box, 8 and older, $25. Players are challenged to go into one another's territory and get back out without being captured. The fifth-graders loved that it was easy to set up and fun for beginners and masters. 'Cool' and 'awesome' were the words used a lot to describe this game. Count Down & Spell Up, Cadaco, 6 and older, $15. This combination of two award-winning games really works. Third-graders liked the reversible design that let them test their spelling and math skills in one game. 100 Really Dumb Things, Patch Products, 7 and older, $15. Silliness rules in this game, which has you do goofy things either every time it's your turn or when something specific happens. One fifth-grade tester described it as 'the best game ever.' Truth Be Told, Buffalo Games, 12 and older, $28. The host player writes the answer to a personal question, and other players write down what they think the host's answer would be. You win points by guessing which answer is the real one. Sixth-graders enjoyed this game. On the Double card game, PlayRoom, 8 and older, $12. In this fast-paced game, players have to get rid of their cards as quickly as they can by matching the colors and shapes on both sides of their cards. You could play this over and over 'without getting bored,' said one fourth-grader. Available at Amazon and some independent retailers. Hyper Blast, Wild Planet, 6 and older, $20. Stomp on the console, and little balls fly around the room. You have to grab them and put them back in the console in the right order -- sometimes by color, by number or using math. It's harder than it looks! The testers in third grade loved 'blasting it' and 'running around.' 