Bike For Egg lets you trade three matching pets for one heavier egg of the same species, and the place that does it is the Fuse Lab. A fusion costs Money, takes a minute, and permanently destroys the pets that go in. In return, the egg it produces usually hatches a much larger animal than the ones you gave up.
Quick answer: Find the Fuse Lab beside the Sell Shop on the Safe Zone’s left. Select three similar pets, pay the displayed Money, press Fuse, and collect the egg 60 seconds later.
Fuse Lab rules in Bike For Egg
The Fuse Lab follows a short, fixed set of rules. Know these before you commit any pets, because nothing that goes in comes back out.
| Rule | Detail |
|---|---|
| Input | Three similar pets |
| Output | One egg, same species |
| Allowed pets | Any rarity, any weight |
| Fusion time | 60 seconds |
| Cost | Money, shown in the menu |
| Availability | Day and night |
| Submitted pets | Deleted permanently |
The Money cost is displayed at the bottom of the Fuse Lab menu once you select your pets. Fusing three Chickens, for example, costs 1000 Money and returns a heavy Chicken Egg.
How to fuse pets at the Fuse Lab
Head to the Safe Zone first. The Fuse Lab stands on its left side, close to the Sell Shop, and it works at any point in the in-game day-night cycle.
You know the fusion went through when the three pets are gone from your collection and a claimable egg of their species appears at the Lab after 60 seconds.
Fused egg size and mutations
Fuse Lab eggs come out big most of the time, which is why the machine is a fast route to giant animals. It is not guaranteed, though. Every so often the Lab hands back a small egg, and that hatches a mini creature with a low earning rate.
Mutated pets are fair game as inputs. If any of your three pets carries a mutation, the best mutation among them transfers to the egg, so one mutated pet plus two plain duplicates still yields a mutated result.
Pets placed in the Fuse Lab are deleted for good, and a small egg is still a possible outcome. Only submit pets you are prepared to lose.
Fuse Lab vs. the Sell Shop for duplicate pets
By the mid-game you will be sitting on piles of duplicate Common, Uncommon, Rare, and Epic pets. Selling them at the Sell Shop next door returns only a small amount of cash, and your active pets back at base already generate Money on their own. Feeding those duplicates into the Fuse Lab instead turns three throwaway pets into one heavier egg.
For a low-cost trial, collect several eggs in the Jungle biome. Hatch three Chickens and put them in the Lab to see each stage, from choosing pets to collecting the completed egg, before fusing anything rarer.
