From Jonathan Heckerman:
Slap It is a reaction-timing game. Press the start button to begin. After one to ten seconds, the spinning circle will turn green. When it does, press the large square button. In 1 Player Mode, your time will be displayed. In 2 Player Mode, the word Winner will appear on the button whose player reacted faster. Have fun!
What's new in this version:
New in Version 1.1:Family Mode -- Now you can play with up to six players!