React!

来 Google Play 网购吧！购买内容之后，立刻就可以在您的 Android 手机或平板电脑上享用，摆脱一切同步烦恼。

A reaction speed game - react by touching the screen or by pressing the trackball as quick as possible when the screen turns red!

Takes a total reaction time over ten reactions to improve reliability.

Features a high score function with ability to send the current high score to s in order to boast.