The following songs from DanceDanceRevolution X2 have received difficulty changes since their last appearance (note that a number in red signifies a higher rating from the previous one, and a number in blue signifies a lower rating from the previous one):
| Song | Artist | Folder | SP Difficulty | DP Difficulty | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BEG | BAS | DIF | EXP | CHA | BAS | DIF | EXP | CHA | |||
| HERO | PAPAYA | DDR X2 | 2 | 6 | 8 | 9→10 | 8 [SA] |
6 | 7 | 9→10 | 8 [SA] |
| only my railgun | fripSide | DDR X2 | 1 | 4 | 6 | 9 | 7 [SA] |
5 | 8 | 13→12 | 8 [SA] |
| Super Driver | 平野 綾 | DDR X2 | 2 | 6→5 | 9 | 12 | - | 6 | 9 | 13 | - |
| A Brighter Day | NAOKI feat. Aleisha G | DDR X2 | 2 | 5 | 7 | 8→9 | 12 | 5 | 7 | 10 | 12 |
| Anti-Matter | Orbit1 & Milo | DDR X2 | 6 | 9→10 | 14 | 17 | 18 | 10 | 15 | 17 | 18 |
| Dummy | RAM | DDR X2 | 2 | 4 | 6→7 | 10 | - | 4 | 7 | 11 | - |
| Freeze | nc ft. NRG Factory | DDR X2 | 2 | 5 | 7→8 | 12 | 12→13 [SA] |
5 | 7 | 12 | 12→13 [SA] |
| going up | colors | DDR X2 | 3 | 7 | 10 | 13→12 | 11 [SA] |
7 | 11 | 14→13 | 12 [SA] |
| GOLD RUSH | DJ YOSHITAKA-G feat.Michael a la mode | DDR X2 | 2 | 5 | 8 | 11→12 | - | 6 | 7 | 11→13 | - |
| Gotta Dance | NAOKI feat. Aleisha G | DDR X2 | 2 | 3 | 6 | 10 | - | 5 | 7 | 10→11 | - |
| Heatstroke | TAG feat. Angie Lee | DDR X2 | 2 | 6 | 7→8 | 10 | 8 [SA] |
6 | 7→8 | 10 | 8 [SA] |
| KIMONO♥PRINCESS | jun | DDR X2 | 5 | 7→8 | 11→12 | 15 | - | 7→8 | 11→13 | 15→16 | |
| La libertad | Cheryl Horrocks | DDR X2 | 3 | 5 | 9 | 12 | 14 | 6 | 9 | 12 | 13→14 |
| oarfish | kors k | DDR X2 | 1 | 2 | 7→8 | 10→11 | - | 2 | 7→8 | 10→11 | - |
| Pluto The First | WHITE WALL | DDR X2 | 8 | 10 | 14 | 17 | 18 [SA] |
10 | 14→15 | 17→18 | 18 [SA] |
| POSSESSION | TAG underground | DDR X2 | 7 | 10 | 14 | 17 | 18 | 10 | 14 | 17 | 18→19 |
| roppongi EVOLVED | TAG underground | DDR X2 | 6 | 8 | 11 | 15 | - | 8 | 11→12 | 15→16 | - |
| Sakura Sunrise | Ryu☆ | DDR X2 | 3 | 7 | 10 | 14 | - | 8 | 10 | 14→15 | |
| Second Heaven | Ryu☆ | DDR X2 | 2 | 5 | 9 | 11 | 14 | 5 | 8→9 | 11 | 14 |
| She is my wife | SUPER STAR 満-MITSURU- | DDR X2 | 3 | 5 | 7 | 11→12 | - | 5 | 7 | 11→12 | - |
| Shine | TOMOSUKE feat. Adreana | DDR X2 | 2 | 3→4 | 5→6 | 7→9 | 11→12 | 3→4 | 6→7 | 7→9 | 11→12 |
| Sky Is The Limit | Sota F. feat.Anna | DDR X2 | 2 | 5 | 9 | 11→12 | - | 5 | 9 | 11 | - |
| smooooch・∀・ | kors k | DDR X2 | 2 | 4 | 7 | 12 | 10 [SA] |
5 | 7 | 11→12 | 10 [SA] |
| VANESSA | 朱雀 | DDR X2 | 4 | 7 | 10→11 | 16 | - | 7 | 11→12 | 16 | - |
| 不沈艦CANDY | Risk Junk | DDR X2 | 2 | 6 | 9 | 13→14 | - | 5 | 8 | 13→14 | - |
| ΔMAX | DM Ashura | DDR X2 | 3 | 5 | 13 | 17 | 17 | 7 | 13 | 17 | 17→18 |
| 冥 | Amuro vs Killer | DDR X2 | 3 | 7 | 11 | 16 | 18 | 7 | 11→12 | 15 | 18 |
| 888 | DJ TECHNORCH | DDR X2 | 2→3 | 6 | 12→13 | 14 | 18 | 7 | 11→12 | 15 | 18 |
| Dance Floor | neuras feat. Yurai | DDR X | 2 | 5 | 6 | 9 | - | 4→5 | 7 | 10 | - |
| GET UP'N MOVE (2008 X-edit) | S & K | DDR X | 2→3 | 6 | 7 | 11 | 8 [SA] |
6 | 7 | 11 | 8 [SA] |
| Horatio | OR-IF-IS | DDR X | 2 | 4 | 9 | 15 | 15 [SA] |
4→5 | 8 | 14 | 14 [SA] |
| Inspiration | DKC Crew | DDR X | 3 | 5 | 7 | 8 | - | 5→4 | 6 | 9 | - |
| Lift You Up | wolli | DDR X | 2→3 | 4 | 6 | 10 | - | 5 | 6 | 8 | - |
| on the bounce | neuras | DDR X | 2→3 | 7 | 11 | 14 | 16 | 6 | 9 | 14 | 15 |
| Party Lights | Tommie Sunshine | DDR X | 2 | 4 | 6 | 11 | - | 4→5 | 6 | 10 | - |
| Ticket to Bombay | Jena Rose | DDR X | 3 | 5 | 7 | 10 | - | 4→5 | 7 | 9 | - |
| AM-3P ("CHAOS" Special) | KTz | DDR SuperNOVA2 | - | - | - | - | 13→14 | - | - | - | 13 |
| Arrabbiata | Reven-G改 | DDR SuperNOVA2 | 5 | 11 | 13 | 15 | - | 12 | 13→14 | 16 | - |
| B4U ("VOLTAGE" Special) | NAOKI | DDR SuperNOVA2 | - | - | - | - | 13→14 | - | - | - | 15 |
| PARANOiA ~HADES~ | αTYPE-300 | DDR SuperNOVA2 | 7 | 11 | 14→15 | 15→16 | 18 | 12 | 14→15 | 17 | 18 |
| Pluto Relinquish | 2MB | DDR SuperNOVA2 | 5 | 12 | 13→14 | 17 | 18 | 12 | 15 | 18 | 18 |
| CHAOS | DE-SIRE retunes | DDR SuperNOVA | 6 | 8 | 12 | 14 | 16 | 9 | 12 | 14 | 16→15 |
| PARANOIA survivor | 270 | DDR EXTREME | 4 | 9 | 11 | 14→15 | - | 9 | 11 | 14→15 | - |
| BRILLIANT 2U(K.O.G G3 MIX) | NAOKI | DDRMAX2 | - | - | - | - | 9→10 | - | - | - | 9 |
| MAXX UNLIMITED | Z | DDRMAX2 | 5 | 10 | 13 | 15→16 | - | 7 | 12 | 15 | - |