Are you ready to take the challenge? Two cards at a time will be dealt and you will be asked to select either the higher or the lower of the two. Sounds easy, but how quick is your reaction time? How many can you get correct in 60 seconds?

Concentration is the key. But as the clock ticks down, the tension builds - can your brain take the strain...

Play again and again and improve your reaction time. Try to beat your best score. Try to beat your quickest reaction time.