Play today’s five levels, shared by everyone. You get one run a day, with 30 seconds for the first level and five more seconds for each following level. Your answer is submitted when time runs out.

Use the slider to estimate the closest separation. The closer your answer, the more points you earn.

Answer as many challenges as you can in two minutes. A perfect answer earns a point; an answer within the allowed range keeps you playing. An answer outside that range ends your run. Play again whenever you like.