A pet's base hatch is only the start. Size, Golden or Void, and a mutation are separate bonuses, and they can sit on the same pet.
Size
The boost page updated March 25, 2026 lists:
| Size | Published bonus | How |
|---|---|---|
| Baby | 0% | Hatch result |
| Big | +50% | 3 Baby copies of that pet |
| Huge | +100% | 3 Big copies of that pet |
| Goliath | +250% on that page | Goliath Machine, Bolts, starting from Huge |
The Gym note instead says Goliath pets receive a 2.5x boost. +250% and 2.5x are different. Open the machine and read its ? panel before you spend Bolts. Older guides called the later sizes Large and Omega. The 2026 page uses Huge and Goliath.
Golden and Void
Golden is +50%. Use the Golden Machine in the Space Gym. The Gym page says more pets in the machine raise the chance. Void is +100%, made by putting a Golden pet into the Void Machine on the Beach. Do Golden first.
Potions and random golden or void hatches show up in older pet pages. The 2026 boost page does not repeat them.
Mutations
In the Mutant Bunker, sacrifice pets at the Mutate Machine. The published bonuses are Glowing +25%, Rainbow +50%, and Ghost +100%. The Cure Machine removes a mutation. An August 2023 page gave roll chances of 64%, 35%, and 1%. Those odds are not on the 2026 page.
What the Gym table adds
The Enchantment Table spends Rebirths and is described as boosting things like Wins and Luck. No enchantment numbers were published. The Pet Index in School is what opens more equip slots as you discover pets. An older pet listing has said new players start with 3 equips and 70 storage, with an equip cap of 40. The 2026 guides do not repeat those caps. Trust the equip counter in your inventory.
Super Rebirth tokens can also buy +1 Pet Equip and Pet Storage. Holding the token is a strength bonus, so spend one only when the missing slot is the bottleneck.