Remember!

Remember the sequence and repeat it. The sequence will grow longer but also tougher. At first there are four circles, but as you progress, the circles will split, making the game more complicated.
If you choose so, you may switch on the leaderboard so you can compete against friend in your circles or even people around the world.
A sequence of three circles will start the game for you to repeat. For every round, time is tracked, the clock will start running after you have clicked the first circle. As soon as you have finished the sequence, the time is added to the total time. Every five rounds, one of the circles splits, and it will be more difficult to complete the sequence.
If you want to use the leaderboard, from the main menu go to 'Leaderboard' and if it is off, switch it on. On the leaderboard, a person with a longer sequence trumps players with a shorter sequence. Within the same sequence-length, a person with a shorter time trumps players with a longer time. For instance, a sequence of 14 with a time of 01:43.022 (minutes:seconds.milliseconds) trumps a sequence of 13 with a time 00:54.658