Getting new monsters in Catch a Monster is already exciting, but things become even better when you hatch one with a mutation. Mutations are special effects that can appear on monsters randomly, giving them unique visual effects along with extra stat boosts. Some mutations improve damage, while others help with survivability or cooldown reduction.
Because mutations are rare, many players are trying to figure out which ones are the best and when the right time is to farm them. In this guide, we’ll go over every mutation currently available in Catch a Monster, including their spawn rates, stat bonuses, and why the Bloodmoon event is the best time to hunt for rare mutated monsters.
All Catch a Monster Mutations
Below are all currently known mutations in Catch a Monster along with their effects and chances.
Shiny Mutation
The Shiny mutation is one of the rarest and strongest mutations in the game for DPS-focused monsters. It gives a major boost to critical hits, making it perfect for monsters that rely on burst damage.
Mutation Chance:
- 0.01% normal chance
- 0.3% during Bloodmoon Weather Event
Buffs:
- +10% Attack
- +30% Crit Rate
- Fixed 200% Crit Damage
The biggest reason why players want Shiny monsters is the guaranteed 200% Crit Damage effect. Even though the mutation is extremely rare, the damage increase can make a huge difference during difficult fights or boss battles.
Huge Mutation
Huge is another very rare mutation that focuses more on balanced stats. Instead of only boosting damage, it also increases HP, making the monster stronger overall.
Mutation Chance:
- 0.001% normal chance
- 0.013% during Bloodmoon Weather Event
Buffs:
- +40% Attack
- +40% HP
Huge monsters are great for players who want stronger frontline units or monsters that can survive longer in battle. Even though the chance is incredibly low, the stat boosts are among the highest currently available.
Bloodlit Mutation
Bloodlit is an exclusive mutation that only appears during the Bloodmoon Weather Event. Because of this, players usually save their best eggs and grinding sessions for this special weather condition.
Mutation Chance:
- 0.5% during Bloodmoon Weather Event only
Buffs:
- +10% Crit Rate
- +100% Crit Damage
This mutation is excellent for critical-hit builds. While it does not increase attack directly, the extra crit damage can massively increase your overall DPS output.
Corruption Mutation
Corruption is currently one of the more mysterious mutations in Catch a Monster. Its exact spawn chance is still unknown.
Mutation Chance:
- Unknown
Buffs:
- No stat bonuses
- Cosmetic effects only
Even though Corruption does not improve stats, many players still want it because of the unique visual appearance it gives to monsters.
Fairy Mutation
The Fairy mutation focuses more on utility and survivability instead of raw damage. This mutation can help monsters stay alive longer while also using abilities faster.
Mutation Chance:
- Unknown
Buffs:
- +25% Damage Reduction
- +25% Cooldown Reduction
Fairy is especially useful on support monsters or units with powerful skills that benefit from shorter cooldowns.
Best Time to Farm Mutations
If you are planning to hunt for mutated monsters, the Bloodmoon Weather Event is easily the best time to do it. This event has only a 0.02% chance to appear whenever the weather changes, so it is very rare.
However, the event massively increases mutation chances across the board. It also unlocks the exclusive Bloodlit mutation, which cannot be obtained anywhere else.
During Bloodmoon:
- Shiny rates become much higher
- Huge mutation rates improve
- Bloodlit becomes available
- Mutation farming becomes far more efficient
Because of this, many players save eggs or spend more time grinding whenever Bloodmoon appears.
Can Monsters Have Multiple Mutations?
Yes, monsters can actually hatch with multiple mutations at the same time. When this happens, all mutation bonuses stack multiplicatively, making the monster much stronger than normal. For example, a monster with both Shiny and Huge can gain massive attack boosts while also dealing stronger critical hits and having higher survivability. These multi-mutation monsters are extremely rare, but they are considered some of the best units you can get in Catch a Monster.
Mutations are one of the biggest mechanics that make Catch a Monster exciting for collectors and competitive players. While some mutations are purely cosmetic, others can completely change how strong a monster becomes in battle.
Right now, Shiny and Huge are among the most valuable mutations because of their strong stat boosts. Meanwhile, Bloodlit remains one of the best event-exclusive mutations for critical-hit builds.
If you really want rare mutated monsters, keep an eye out for the Bloodmoon Weather Event. Even though the event itself is rare, it gives you the best possible chance to hatch some of the strongest monsters in the game.