How weight works in Break and Steal an Egg
Heavier pets earn more. Here is exactly how much.
Updated Nov 9, 2026130K playing (Nov 9)97 pets
Doubling a pet's weight multiplies its income by about 1.65×.
Income = base income × (weight ÷ 78 KG)0.722. Planet X pets grow a little faster (exponent about 0.74). Mutations and boosts multiply on top.
Winged Imp: income at every weight
Income at 10,000 and 100,000 KG
| Pet | Exponent | 10,000 KG | 100,000 KG |
|---|---|---|---|
| Behemoth | 0.74 | $36.3B/s | $199B/s |
| Qilin | 0.72 | $24.5B/s | $130B/s |
| Crystal Scorpion | 0.7403 | $23.9B/s | $131B/s |
| Fire Dragon | 0.7208 | $13.3B/s | $72.5B/s |
| Alien Jellyfish | 0.741 | $19.2B/s | $106B/s |
| Velociraptor | 0.7219 | $12.5B/s | $66.5B/s |
| Caladrius | 0.7273 | $11.5B/s | $61.1B/s |
| Winged Imp | 0.7225 | $9.24B/s | $48.8B/s |
What we found
- Heavy pets follow the formula closely, within a fraction of a percent.
- Light pets earn a bit less than the formula until around their normal hatch weight (a few thousand KG for Galaxy pets). The calculator includes this.
- Merging adds weights exactly, and the merged pet's income follows the curve.
- Tooltips show the pet's own income: boosts and potions don't change them.
Does weight affect income in Break and Steal an Egg?
Yes. A heavier pet earns more, but not in direct proportion: income grows with weight to the power of about 0.72, so doubling a pet's weight multiplies its income by about 1.65×.
What happens to weight when you merge pets?
The merge machine adds the three pets' weights together (e.g. 82,542 + 70,341 + 15,999 KG = 168,882 KG), and the pet that hatches keeps that weight. Its income follows the weight curve, not the sum of the three incomes.
Do boosts change the income shown in the pet's tooltip?
No. The same pet at the same weight shows the same income on different accounts and before and after a cash potion ends, so tooltips show the pet's own income. Boosts and mutations multiply on top.
Numbers last checked . We re-check them when Break and Steal an Egg updates. Values marked ≈ are estimates.