Immunity refers to a creature's resistance to some type of damage or ability.
Some creatures are known to be immune to:
- Death Damage
- Drown Damage
- Drunkenness
- Earth Damage
- Energy Damage
- Fire Damage
- Holy Damage
- Ice Damage
- Invisibility
- Life Drain
- Paralysis
- Physical Damage
This means that, for example, if a creature is immune to Fire, it will not be damaged by any attacks from a Wand of Inferno, Great Fireball rune, or any other attack that causes fire damage.
Players can also experience an artificial immunity to certain types of damage, usually be wearing certain Rings or Amulets and Necklaces. However, this immunity is not permanent. In most cases, the immunity-giving items have charges, which decrease whenever you are attacked with the type of damage they make immune from.