The purpose of difficulty naming is to inform players how difficult a map is. This article lists common conventions as well as other alternatives that have been gathered throughout the years. However, as long as the set of difficulty names is descriptive and clearly indicates progression of difficulty, you may use any desired kind of scheme.
These difficulty names are the most commonly used for each game mode.
Note: The special difficulty name Marathon historically allowed mappers to submit maps of longer songs, and thus became popular for single-difficulty mapsets. Today, the name has no special meaning and is typically only used for very long songs or song compilations.
osu!
Easy
Normal
Hard
Insane
Expert
osu!taiko
Kantan
Futsuu
Muzukashii
Oni
Inner Oni / Ura Oni
osu!catch
Cup
Salad
Platter
Rain
Overdose
osu!mania
Easy
Normal
Hard
Insane
Expert
Beginner: Below Easy
Shokyuu: Below Kantan
Advanced: Between Normal and Hard
Hyper: Between Hard and Insane
Extra: Alternative to Expert
Extreme: Above Expert
Hell Oni: Above Inner Oni / Ura Oni
Deluge: Above OverdoseMapsets of songs that originated from other games often borrow that game's difficulty naming scheme. Usage of these difficulty names is acceptable for any song. Some of the common naming schemes that made their way into osu! are listed here:
Beginner
Normal
Hyper
Another
Black Another
Leggendaria
Beginner
Basic
Difficult
Expert
Challenge
EZ
NM
HD
MX
SC
EZ
NM
HD
SHD
EX
Novice
Easy
Medium
Hard
Expert
Easy
Normal
Hyper
EXNote: Large mapsets of SOUND VOLTEX songs often use difficulty names from multiple versions of the game, even if the song does not appear in all of them.
BASIC / BSC
NOVICE / NOV
ADVANCED / ADV
EXHAUST / EXH
INFINITE / INF
GRAVITY / GRV
MAXIMUM / MXM
HEAVENLY / HVN
MAXIMUM / MXM
VIVID / VVD
MAXIMUM / MXM
ULTIMATE / ULT
EXCEED / XCD
Past
Present
Future
Eternal
Beyond
Whisper
Acoustic
Ultra
Master
EASY
BASIC
ADVANCED
EXPERT
MASTER
Re:MASTER
ULTIMA / WORLD'S END
LUNATIC
Easy
Normal
Hard
Insane
Chaos
Glitch / Crash
Extra
Special
Easy
Normal
Hard
Lunatic
Extra / Extra Stage / Phantasm