A hiker wants to cross a scary river. Kids put down logs he can step on so he doesn't get chomped by gators. No problem, right? Wrong! This marvelous game of logic and spatial relations consists of a magnetized guy, a bunch of toy planks and tree stumps, and 40 "challenge cards" from Beginner to Expert level. From an educational standpoint, we give this toy top marks: it directly addresses the problem-solving, spatial relations, and logic skills that run through math and science curriculum in every elementary and middle school grade. Plus, it can take as little as five minutes to play, so it's a great way to take a quick break in the middle of a homework session. (ThinkFun, 1 or more players, $15.99)