Here is a list of all the bad mutations you can acquire. Although some may have situational uses, they are at best mixed blessings. Any of these can be acquired through any source of bad mutations.
|1||1% chance of berserking each time you attack.||You tend to lose your temper in combat.|
|2||Same, with a 3% chance of berserking.||You often lose your temper in combat.|
|3||Same, with a 9% chance of berserking.||You have an uncontrollable temper.|
Often referred to as "berserkitis", Clarity negates this.
Formicids are exempt, because their stasis stops them from berserking.
|1||Reduces body armour base AC by half.||Armour fits poorly on your strangely shaped body.|
Does not stack with Jiyva's Pseudopods mutation. Does not affect AC from any other source (i.e. other equipment, the protection ego, etc.).
|1||Chance to shout when enemies enter line of sight (same noise as tt).||You occasionally shout uncontrollably at your foes.|
|2||Greater chance for louder shouts.||You sometimes yell uncontrollably at your foes.|
|3||Greatest chance for loudest shouts.||You frequently scream uncontrollably at your foes.|
|1||You are sometimes teleported next to a monster a short distance away from you.||You are occasionally teleported next to monsters.|
|2||More frequent and can be teleported longer distances.||You are sometimes teleported next to monsters.|
|3||Most frequent and can be teleported to anywhere on the floor.||You are often teleported next to monsters.|
Formicids are exempt, because they cannot teleport.
No Unsafe Scrolls
No Potion Heal
|1||Potions heal 50% of what they would normally.||Potions are less effective at restoring your health.|
|2||Potions do not restore any HP.||Potions cannot restore your health.|
|1||A small chance for stat loss whenever you take damage.||Your body sometimes deteriorates on taking damage.|
|2||Increased chance for stat loss.||Your body often deteriorates on taking damage.|
Prior to 0.17, this mutation had three ranks.
|1||Gain further malmutations until trait expires.||You have hidden genetic defects.|
|2||Same as previous level, though lasts longer.||You have terrible hidden genetic defects.|
|1||Max HP -10%||You are frail.|
|2||Max HP -20%||You are very frail.|
|3||Max HP -30%||You are extremely frail.|
|1||Max MP -10%||Your magical capacity is low.|
|2||Max MP -20%||Your magical capacity is very low.|
|3||Max MP -30%||Your magical capacity is extremely low.|
|1||-2 to STR, INT or DEX||You are weak|
You are dopey.
You are clumsy.
|2||-4 to STR, INT or DEX||You are very weak|
You are very dopey.
You are very clumsy.
While it's possible to gain this mutation multiple times, each attribute is limited to 2 ranks.
|1||No (non-divine) HP regeneration when monsters are in line of sight.||You do not regenerate when monsters are visible.|
|1||Spell Power-, Spell Success+||Your spells are a little easier to cast, but a little less powerful.|
|2||Spell Power--, Spell Success++||Your spells are easier to cast, but less powerful.|
|3||Spell Power---, Spell Success+++||Your spells are much easier to cast, but much less powerful.|
- In 0.28, Devolution was introduced.
- In 0.27, Blurry Vision was replaced with No Unsafe Scrolls.
- Prior to 0.22, MP-Powered Wands was different and considered a bad mutation.
- Prior to 0.20, the Inhibited Regeneration mutation had 3 ranks.
- Prior to 0.17, the Forlorn mutation was available.
- Prior to 0.15, the Slow/Fast metabolism mutations were available as random mutations.
- Prior to 0.14 the Slow Movement mutation occurred randomly and levels 1 and 2 of the Slow Healing mutation cut natural regeneration by 33% and 66% respectively, regardless of enemy presence.
- Prior to 0.13, Reduced Attributes could be acquired up to 14 times, giving you -1 per rank.