The concept behind this game is quite simple. Your playing piece is standing on one side of a river, and must get across without falling in. What do you have to work with to help you accomplish this task? You have planks that form bridges, supported by stumps that stick out of the water.

The game comes with several stumps and planks in a variety of lengths. There are 40 game cards, each with a different layout of holes punched through where the stumps are supposed to go. Once you've put the stumps in place, your challenge is to find a way to spread your planks from stump to stump so you can safely cross the river.

Sounds simple? Well, it is. And it isn't. The 40 puzzles start easy, but progress to more challenging, so there's something for younger children, but also something to keep them interested as they get more advanced.