Rank System Guide

Understand how pet ranks work, how to fuse for upgrades, and strategies for reaching the coveted S-Rank.

Rank Tiers

Every monster in Catch a Monster has a rank that determines its max level and stat potential. Higher ranks unlock significantly more powerful stats.

E

Starter Rank

Low max level. Found on Starter Island.

D

Common Rank

Mid-game viable. First fuse target.

C

Intermediate

Solid for mid-game content.

B

Advanced

Competitive PvE. Boss-viable.

A

Elite

End-game. High stat scaling.

S

Supreme

Max power. 1/2000 chance for rare S-rank.

How Fusing Works

  1. Collect 4 identical copies of the same monster at the same rank
  2. Visit the Fuse NPC near the spawn point on Starter Island
  3. Pay the fusion cost (coins increase with each rank tier)
  4. Receive 1 copy at the next rank (e.g., 4Ɨ Rank E ā†’ 1Ɨ Rank D)
āš ļø Important: You need 45 = 1,024 copies of a Rank E monster to reach Rank S through fusing alone. Plan your farming carefully!

Fusion Cost Per Rank

From Rank To Rank Copies Needed Approx. Coin Cost
E D 4 500
D C 4 2,000
C B 4 8,000
B A 4 25,000
A S 4 100,000

Pro Tips for Ranking Up

šŸŽÆ Boss Max Level Bonus

Defeating each boss permanently grants +5 max level to all your pets. Clear all bosses to unlock the highest stat potentials.

šŸŽŸļø Rank Luck Gamepass

The "Catch & Hatch Rank Luck" gamepass improves the base rank of monsters you catch and hatch, reducing the fusing grind significantly.

šŸ’Ž Arcane Sparkstones

Use Arcane Sparkstones to reroll a pet's stats. Save these for A and S rank pets where the stat difference matters most.

šŸ„š Rare Egg Ranks

Pets from rare eggs (Elite, Boss Eggs, Rift Eggs) can hatch at higher base ranks, giving you a head start on fusing.