For health as a gameplay mechanic, see: Health
For regulations surrounding HP drain rate, see: Ranking criteria
HP drain rate (HP) is a beatmap difficulty setting that controls how much health is passively lost to health drain. It also affects how heavily a player is penalized for missing notes and how much health is gained back by accurately hitting hit objects.
HP ranges from 0 to 10, where 10 is the most punishing and 0 is the most lenient.
There are four mods that alter the HP drain rate when activated:
: Halves the HP value.
: Multiplies the HP value by 1.4, up to a maximum of 10.
: The HP value is not affected, but due to the 50% play speed increase, health drain occurs 50% faster.
: The HP value is not affected, but due to the 25% play speed decrease, health drain occurs 25% slower.