Control your boat through the rapids of the Grand Canyon, collecting gems and avoiding logs, and answering questions about erosion as you race to the finish line before the time elapses!

You get points for each question you answer correctly and for each gem you collect. If you finish before the timer runs out, you get an extra point bonus for every 30 seconds extra you finish! You also lose points when you hit logs.

The game is designed to help kids review the topics they covered in school about erosion. There are 20 questions in total which appear at standard intervals throughout the game. Questions are taken from the standardized requirements for public school teachers.