Acceptance criteria for ranking songs

The purpose of the ranking criteria is to set an objective standard to follow that ensures that maps put into the rank pool are fair for players.
The criteria is enforced in a way that does not take into account bias from any mapper, player, or team member.
The criteria involves two sections: one for rules, and one for guidelines.
Rules are criteria that must be followed for a map to be considered rankable.
Guidelines are criteria that should be followed for a map to be considered rankable but can be broken under proper setup or justification.
Further included in this document are a glossary and addendum. The glossary includes definitions for important terms in the criteria.
The addendum includes suggestions that are not explicitly about rankability but can aid a map in getting through quality checks.
Note that while sections in the addendum do not have to be followed explicitly, excessive abuse of the suggestions can be reason for a map to be denied.

WARNING: Please note that once a map is ranked, it remains permanently so.
Thereby, if a mapper chooses to rank only one difficulty of his map, once the map is ranked, it will be impossible to rank the remaining difficulties in the future or make any changes whatsoever.

For any comments, questions, or concerns about material included or not included within the criteria, feel free to message a member of Ragnacustoms.


  • Mapper must have released at least five maps
  • Mapper must have uploaded a score on :
    • - 2 of 3 levels of his own map for a 3 levels mapset.
    • - 1 of 2 levels of his own map for a 2 levels mapset.
    • - the level for a 1 level mapset
    This applies to all updates during the ranking process.
1. Gameplay
  • Maps must not require the use of any external mods or programs to play
  • Maps must be designed to be played without any gameplay modifiers
  • Maps must not be converted from any other rhythm game
  • The max value possible for a difficulty to rank is 10
2. Patterns
  • A map cannot have any runes that are clearly placed or positioned unintentionally by the mapper
  • A pattern must not be at a significantly higher effective BPM than what is justified within the rest of the map
3. Timings
  • The map's BPM must perfectly match one of the BPMs of the song or a multiple of one of the BPMs of the song
    Note that it is highly recommended to submit a map with a constant BPM as maps with variable BPMs are hard to create with precision and will probably need a lots of modifications
  • Maps with variable BPM timing must be timed as accurately as possible
  • All notes must be perfectly on time to a distinct sound in the music
  • Undermapped sections must not have a single note off time, and each note in an undermapped section must have a corresponding sound in the music
  • Rhythmic overmapping is not allowed. A single sound cannot be represented by multiple notes unless those notes fall into a single line
4. Miscellaneous
A. Audio
  • A map's audio must not be modified to add excessive amounts of silence anywhere in the song
  • A map's audio must consist of musical elements set to an identifiable structure
  • The length of the map's audio, ignoring any added silence, must be longer than 20 seconds
  • A decent audio quality is a must. (saturation, volume, …)
B. Accompanying text and images
  • There must not be:
    • nudity
    • near-nudity
    • sexual references
    • extreme violence
    • gore
    • substance abuse
    • political references
    • religious references
    or any other form of explicit content anywhere in the files contained in the map
  • There must not be content that harasses or denigrates any individual or group anywhere in the files contained in the map

  • A Map description must not contain any form of advertisement
C. DAT editing
  • All difficulties in a mapset that are going for rank must not contain any form of unfair modification via editing of the .dat file manually or through external mappers


1. Consistency
  • Repeated sections of music should feel similar, and similar sections should not play excessively differently unless there is some change in the music
  • Mapping decisions around consistent representation should be understandable
2. Variety
  • Varying the mapping as the music changes is important to musical representation. Big changes in the music should correspond to a change in the mapping
  • This does not require that patterns must change with every change in the music, nor does it disallow variation in sections where the music stays the same
3. Emphasis
  • The patterns used must reflect as close as possible the intensity level of the music being mapped
  • The intensity of the mapping in each section relative to other sections should be somewhat in line with the intensity of the music. Deviation is allowed as long as a section’s intensity is not excessively raised or lowered relative to the intensity of the rest of the song