Concentration app.Cards that are used in applications, ‘Handy Menu -Sushi-‘The sushi came. Talk to.Game Mode "friendly," "normally," "difficulty" "infinitely" and has been prepared.In each level, one card storage time varies.Friendly: 5 secondsNormal: 3 secondsDifficulty: 1 secondinfinitely: 5 seconds (mode in which the game is over when you make a mistake).