The Wii Balance Board is a pretty novel device, but it doesn’t provide players with complete realism. The FriiBoard, however, is looking to improve on the experience gamers have with titles like Shaun White’s Snowboarding.
“Built for the Wii™ Fit Balance Board and associated Wii™ motion-oriented games. You haven’t experienced Shaun White™, Tony Hawk™, or We Ski™ until you’ve snapped your balance board into our FriiBoard!™ Put new life into your old balance board games! Make all your games MORE REAL. Great for Kids and Adults alike.”
As the official description notes, the Balance Board fits right on top of the FriiBoard and you can expect the peripheral to tilt/move in a more realistic manner. It’s not exactly the safest peripheral, though. Just make sure that you’ve cleared all objects away from in case you fall off or get tossed to the side!