Lights Out

The start lights come on one per second. Once all five are lit, they go out at a random moment, and that's when you press. Your reaction time is measured in milliseconds. Going early is a jump start, and anything under 100 ms counts as a guess.

Practice as much as you like in Single Start, or race the average of 5 starts in Grand Prix mode, where every jump start costs a 1 second penalty. Your recent attempts and records stay on screen.