Editing Dance Dance Revolution (section)

===Difficulty===
Depending on the edition of the game, dance steps are broken into various levels of difficulty, often by color. The difficulty is separated into two to five categories, depending on the game:

{| class="wikitable" style="max-width: 45em;"
|-
! rowspan="2" style="width: 20%;"  | Game !! colspan="5"  style="width: 80%;" | Difficulty
|- style="text-align: center; font-size: 1.5em;"
| style="background: #88ffff;" | Beginner || style="background: #ffff88;" | Basic || style="background: #ff8888; color: white;" | Difficult || style="background: #88ff88;" | Expert || style="background: #8888ff; color: white;" | Challenge
|- style="text-align: center;"
! ''SuperNOVA'' series {{dagger}}
| 1–4
| 1–9
| 2–10
| 4–10
| 6–10
|- style="text-align: center;"
! ''X'' and newer
| 1–9
| 2–13
| 4–16
| 7–18
| 4–19
|- style="text-align: center;"
| colspan="6" | {{dagger}} ''[[Dance Dance Revolution Extreme]]'' and older also used these difficulties, but with different names and level ranges from game to game. Some difficulties are absent in some games.
|}

The first release of ''Dance Dance Revolution'' established two difficulties: '''Basic''' for Single and Double modes, and '''Another''' for Single mode only. Each chart is rated with a level from 1 to 7, and every release through ''3rdMix Plus'' also attributed a title to each level number. The ''Internet Ranking Version'' added Another for Double mode, and a new higher difficulty of '''Maniac''' for Single mode only, along with several level 8 charts, titled Exorbitant. ''2ndMix Club Version 2'' introduced several level 9 charts, titled Catastrophic until ''3rdMix Plus'' and Evolutionary in ''X3 vs. 2ndMix''. The Maniac difficulty was renamed '''SSR''' and expanded to Double mode for new songs in ''3rdMix'', with the name reverting to Maniac in ''3rdMix Plus''. Beginning with ''4thMix'', all songs featured the Maniac difficulty in Single and Double mode. Also, '''Another''' was renamed to '''Trick'''. ''4thMix Plus'' introduced new Maniac charts for 16 songs, while the original Maniac charts were labelled Maniac-S and Maniac-D in this game, with only the new charts remaining in ''5thMix''.

''DDRMAX'' introduced the "Groove Radar", showing how difficult a particular sequence was in various categories, such as the maximum density of steps. This release removed the level numbers, and among the 42 songs, two ("Flash in the Night" and "Follow Me") have never received any level numbers due to being ''DDRMAX'' exclusives. Additionally, ''DDRMAX'' changed the difficulty names to '''Light''', '''Standard''', and '''Heavy'''. Beginning with ''DDRMAX2'', level numbers were reintroduced, along with a level 10 for "MAX 300" and "MAXX Unlimited". Level 10 was titled Revolutionary in ''X3 vs. 2ndMix''. ''DDRMAX2'' also introduced the '''Challenge''' difficulty with "Kakumei" ("革命") on One More Extra Stage, and in Nonstop Challenge Mode songs. ''Extreme'' introduced the '''Beginner''' difficulty, which premiered in ''Dancing Stage EuroMix'', as the game's easiest difficulty. It is only available in Single mode, except in the ''[[Dance Dance Revolution Universe|DDR Universe]]'' series for the [[Xbox 360]], which offers Beginner difficulty in Single and Double modes. ''Extreme'' features a total of 37 songs with the Challenge difficulty. Exclusive to ''Extreme'' were "flashing 10s" that seemingly hint to go beyond a regular 10.

''[[Dance Dance Revolution SuperNOVA|SuperNOVA]]'' standardizes the naming of difficulty to the '''Beginner''', '''Basic''', '''Difficult''', '''Expert''', and '''Challenge''' respectively.

Due to the old system not going past level 10 and other outdated reasonings, ''[[Dance Dance Revolution X|X]]'' overhauls the numbering system, now extending the scale of 1–20. All songs from previous versions were re-rated on the new scale, roughly multiplying the old number to 1.4x (i.e. 9 now being 12 or 13). Even though the rating can go up to 20, no song has reached that level. The highest rated song on ''X'' is 18. ''[[Dance Dance Revolution X2|X2]]'' introduced the first 19: "Valkyrie dimension" Challenge. Although the new rating system is an improvement from the old system, it is common for each sequel to re-rate charts to reflect the proper difficulty, such as "POSSESSION" Double Challenge being re-rated from 18 to 19 on both ''[[Dance Dance Revolution II|DDR II (Wii)]]'' and ''X3 vs. 2ndMix''.

Starting from ''[[Dance Dance Revolution A|A]]'', the difficulty is now displayed during gameplay.