Falling Nikochan
The rule is simple: hit the notes when Nikochan (smiley faces) overlaps the line.
Regardless of Nikochan's position or falling direction, you can hit the notes by pressing any key on PC (except Esc), or by tapping anywhere on the screen on tablets and smartphones.
You can hit big Nikochans just like normal Nikochans, but if you press two keys at the same time or tap with two fingers, you will get more score than usual.
The more Nikochans you hit in a row without missing, the more Chain bonus points you get, and the more score you get.
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