"筆を使って日本語を 書きます。 あなたがするのは オイシイとこだけ。" "(Write Japanese with the brush. You only have to do the fun parts.)"
— Power Calligraphy Description (Rhythm Tengoku)
"Have you ever tried writing Japanese calligraphy? It requires grace, finesse, and a surprising amount of upper-body strength."
— Power Calligraphy Description (Rhythm Heaven Fever and Rhythm Heaven Megamix)
You play as a giant hand writing calligraphy with a surprising amount of strength. When the giant hand reaches enough power, press A to write. There are six different symbols to write (レ ("Re" Katakana), 、 (a Japanese comma), 力 (power), 己 (oneself), 寸 (sun, a Japanese kind of measurement), 心 (heart), and the characters つるニハ○○ムし (or つ3ニハ○○ムし in the Korean version) arranged to form a face). Near the end, the game goes faster and people come out dancing.
A: Write (with power)
Simple Tap Mode
Tap: Write (with power)
Hit: The symbol is successfully written.
Barely: If early, the line turns out squiggled. If late, a messy spot of ink is made. If the Calligraphy People are present, they will stumble over. Either way, a sigh will be let out. A barely counts as a miss.
In Tengoku, a "doink" sound can be heard when this happens, but it's not in Fever or Megamix.
Miss: If missed completely no marks are made, letting out a sigh. If the Calligraphy People are present, they will stumble over.
Power Calligraphy also appears in the 2P mode of Rhythm Tengoku (Arcade) where it is referred to as Power Calligraphy 2P (リズムお習字 2P,Rhythm Oshuji 2P?). It plays the same as the 1P version, except it has a split screen display to accommodate the second player. As a consequence of this design, there is only one column of dancers per screen, and they walk over the paper.