-Some people did not know what to do. Now there is a help screen with a tutorial video.
How fast are your reactions? How good are your reflexes? Find it out with "Reactions".
You have to meet different tasks shown on screen, for example: shake your iPhone or iPod, tilt it, snap fingers, freeze and others. Try to react to them as fast as you can.
There is also a two player mode. Challenge your friends - two players on the same device: who will react at first?
"Reactions" uses the built in microphone to detect claps or snaps. Thus the clapping/snapping action is only available to iPhone but the game does also work on iPods.