Lost In Translation/Dance Dance Revolution 2nd Mix

About The Game
Dance Dance Revolution 2nd Mix is an arcade video game where the player controls the game using their feet.

Scoring
Grades : SS - S - A - B - C - D - E

The formula for calculating the score for a combo is a bit complicated, the point value for any step in a combo depends on two factors :
 * Perfects are worth 3 times as much as Greats.
 * The point value for a step increases every time the combo increases by 4.

The exact formula for the score of a combo is...
 * let [x] denote the greatest integer function (i.e., where [x] is the greatest integer less than or equal to x). Then, the point value for the nth step in a combo is :
 * S(n) = G(n) if the nth step is a Great, or P(n) if the nth step is a Perfect;
 * G(n) = 100 ([n/4]^2 + 1);
 * P(n) = 3G(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 (1999)
 * Sega Dreamcast (2000)