NM1 - Usually long, consistency maps inclined towards aim. (will be updated with more later)

NM2 - Maps that include mostly tapping, with bursts of any size starting from about 5 notes. (will be updated with more maps later)

NM3 - Maps with lower BPMs, uncomfortable to play with a single-tapping style. (will be updated with more maps later)

NM4 - Tech maps, with things like uncomfortable sliders or finger control for example (will be updated with more maps later)

NM5 - Higher BPM maps than NM2s, on the same base which is tapping inclined. (will be updated with more maps later)

NM6 - Maps that are awkward by default, with unusual mechanics and stats like precision, reading or polyrhythms for example. (will be updated with more maps later)

HD1 - Preferred to play with HD on, mostly base mechanics used, like awkward aim. (will be updated with more maps later)

HD2 - Preferred with HD on, maps that are set to an AR of 8 or lower, made to test HD reading mostly. (will be updated with more maps later)

HD3 - Preferred with HD on, maps that are using more uncomfortable mechanics like alt, tech or gimmicks to test comfort on HD. (will be updated with more maps later)

HR1 - Preferred with HR on, maps that test base mechanics at higher AR/OD. (will be updated with more maps later)

HR2 - Preferred with HR on, maps that test precision at high AR with a higher CS than most maps. (will be updated with more maps later)

HR3 - Preferred with HR on, maps that test awkward mechanics on HR, like HD3 (alt, tech, gimmicks...) (will be updated with more maps later)

FM1 - Maps that can be played either without mod, or with HR or HD, even EZ for the most courageous ones, that test easier mechanics like consistency and tapping (will be updated with more maps later)

FM2 - Maps that are made to be awkward with either mod you play it with, becoming reading maps with HD/EZ and precision maps with HR. (will be updated with more maps later)

FM3 - Maps that can be played with any mods like FM1s, but that test harder mechanics, whether it be reading, tech, or anything that doesn't appear in the rest of the pool. (will be updated with more maps later)

TB - Long maps that often test multiple skillsets, measuring comfort on many skills at once. (will be updated with more maps later)