X3 was the final entry in the "X" Trilogy, however, the game's UI and unlocking mechanisms will later be reused in another title.
Konami also announced that there would be a new 2ndMIX mode, where the player could play a full HD recreation of DDR 2ndMIX.
In 2ndMIX MODE, characters no longer perform their original dancing moves.
From February 2, 2012 onward, e-Amusement players also receive a star after their first play of the day.
When the player earn 9 stars, they can access Extra Stage regardless of their grade.
This does not apply to players without e-Amusement, who must score 3 stars each song if they want to access Extra Stage (as a result, they have to score either AAA or AA with full combo on all songs).
In addition, the Encore Extra Stage songs are eventually accessible as Extra Stages after a specified date, with UNBELIEVABLE (Sparky remix) being available on January 25, 2012, NEPHILIM DELTA on April 25, 2012.
As of July 23, 2012, all Extra Stage songs have been unlocked for regular play.
Two additional songs were added for Encore Extra Stage after a specified date: NEPHILIM DELTA can be accessed from January 25, 2012 onward by scoring AA or better on UNBELIEVABLE (Sparky remix) on Expert, and SILVER☆DREAM can be accessed from April 25, 2012 onward by scoring AA or better on NEPHILIM DELTA on Expert.
[6] The fourth and final route was announced on May 26, 2012 and started on May 30, 2012 from Hokkaido and Okinawa Prefectures yet again.
The Extra Tour event was ended on July 22, 2012[8] and all songs were unlocked for regular play.
Scoring AA or better on these songs on Expert would unlock the Encore Extra Stage, LOVE IS THE POWER Re:born.
The event was ended on November 5, 2012 and all songs were unlocked for regular play.
There were five Internet Rankings : On AOU 2012, Konami announced a new event called "Daily Special" that started February 20, 2012.
In this event, a new BEMANI crossover was available on each day of the week (from Monday to Friday).
The cycle of the song unlocking was done on 12.00 P.M. (JP UTC) and required e-Amusement.
Players could collect APPEND ENERGY and buy items from e-Amusement GATE, some of which altered aspects of the game.
Players may set options before a course is played, but not midway between songs.
The Original Soundtrack for the "X3 Side" of DDR X3 vs 2ndMix was officially announced on April 20, 2012.
This includes a Twitter campaign, release party, and autographs signing of the game producers.