Lost In Translation/Dance Dance Revolution 4th Mix

Dance Dance Revolution 4th Mix is an arcade video game where the player controls the game using their feet.

Scoring
Grades : AA - A - B - C - D

Let n be the number of the step in the combo. Then, the point value for the nth step is :
 * S(n) = G(n) if the step is a Great step, and P(n) is the step is a Perfect step;
 * G(n) = 555 + 333n;
 * P(n) = 777 + 333n;

Therefore, the total point value for a combo of n steps is the summation of S(n) from 1 to n.

Series

 * 1) Dance Dance Revolution (1998)
 * 2) Dance Dance Revolution 2nd Mix (1999)
 * 3) Dance Dance Revolution 2nd Mix with beatmaniaIIDX CLUB VERSiON (1999)
 * 4) Dance Dance Revolution 2nd Mix with beatmaniaIIDX substream CLUB VERSiON 2 (1999)
 * 5) Dance Dance Revolution 3rd Mix (2000)
 * 6) Dance Dance Revolution 3rd Mix Plus (2000)
 * 7) Dance Dance Revolution 4th Mix (2000)
 * 8) Dance Dance Revolution 4th Mix Plus (2000)
 * 9) Dance Dance Revolution 5th Mix (2001)
 * 10) DDR MAX - Dance Dance Revolution 6th Mix (2001)
 * 11) DDR MAX 2 - Dance Dance Revolution 7th Mix (2002)
 * 12) Dance Dance Revolution Extreme (2002)
 * 13) Dance Dance Revolution Extreme 2 (2005, Sony PlayStation 2)
 * 14) Dance Dance Revolution with Mario (2005, Nintendo GameCube)
 * 15) Dance Dance Revolution SuperNova (2006)

Ports

 * Consoles :
 * Sony PlayStation (2001)