Low AR and small circles together, so the map gets much harder whichever mod you pick. 3,391 maps from 958 tournaments. Median 5.47★ (middle 80%: 4.4–6.6★), 2:35 long, 176 BPM. 37% of maps are AR 8 or lower and 33% are CS 5 or higher, more than any other FreeMod slot.
Collected from 1,591 osu!standard tournament mappools listed on osu!collector. A map's slot is its position within its mod bracket in the pool (the third NoMod map is NM3). The skill in the title is what this slot traditionally tests, but every tournament pools differently, so many maps won't match the label.