[2×2]
Drag the four colors displayed.
Drop on the same color.
Tap the four colors to rotate.

[1×1]
Drag the displayed color and drop it on the same color.
or
Tap the same color.

For each of the above, you can select either Time Attack mode or Count Up mode.
- Time Attack
Measure the time to find the same color a specified number of times (within 1 minute)
- Count Up
Count the number of times the same color is found within 1 minute