Designed by Martyn Boogaarts
This is an arcade-style game that tests your reaction speed. The robot pops up disks that you have to whack as quickly as possible using the wack-wheel hammer. Challenge your friends and see who wackedy-wacks the fastest!
The build instructions may be found at the official LEGO MINDSTROMS site here
How to play: Press the Touch Sensor to start a game. Each game has ten rounds of whacking, and your average response time is measured.