|||The objective is to select appropriate numbers to solve the arithmetic questions in a given time. The bar in the upper left fraction indicates the time allowance.
"?" represents the randomly appeared special items such as an "X", "+5s", and "-5s".
Scoring every 500 points allows you to switch to the bonus stage.
If you have calculated it right, the bubbles will be dissolved. The ultimate high score will be posted on the Genius Scoreboard.
2/Up: Move cursor up
8/Down: Move cursor down
4/Left: Move cursor left
6/Right: Move cursor right
5/Fire: Select/Press again to deselect the number
0: Reset the selected bubbles
?: Randomly appeared item
X: Wild variant compatible to solve any question.
+5s: Extra 5 seconds are rewarded.
-5s: 5 seconds are deducted.|||
