Bike For Egg Fuse Lab Guide: Turn Three Similar Pets Into an Egg

The Fuse Lab in Bike For Egg turns three similar pets into a single egg of the same species, and the egg it produces is heavier than normal. You'll find the structure on the left side of the Safe Zone, close to the Sell Shop, and it works at any time of the in-game day or night. Before you use it, know the two costs up front: every fusion charges you Money, and all three pets you submit are deleted permanently.

How to run a fusion

1. Walk to the Fuse Lab on the left side of the Safe Zone and interact with it.
2. In the Fuse Lab menu, click on three similar pets — they need to be the same species.
3. Check the amount of Money required for the fusion, shown at the bottom of the menu.
4. Hit the Fuse button if you have the necessary cash.
5. Wait 60 seconds for the fusion to complete, then claim your egg.

The egg that comes out belongs to the same species as the pets you put in.

What you pay and what you lose

Money: each fusion charges its own fee, and the menu tells you the exact amount before you commit — check the bottom of the menu with your three pets selected. As a concrete example, submitting three Chickens cost 1,000 Money to start the fusion and produced a heavy Chicken Egg. Your own fusion may cost a different amount, so always read the menu price before pressing Fuse.

Your pets: every critter placed into the Fuse Lab is deleted permanently once the fusion runs. There is no way back, so be certain about the three pets you select before starting.

What you get from the egg

Eggs from the Fuse Lab are generally big and hatch giant-sized animals. On some rare occasions you may receive a small one instead, and those hatch mini creatures with low earning rates — worth remembering before you submit valuable pets.

Mutations matter too. Mutated pets can be deposited into the lab, and the best mutation out of all three submitted pets carries over to the egg. If you're fusing anyway, submitting your best-mutated copies protects that trait. For more on how mutations work, see the pet mutations guide.

Once your egg is ready, you still need to hatch it — the egg hatching guide covers that step.

Which pets to fuse

Pets of any rarity and weight can go into the Fuse Lab, so nothing is locked out. A good habit in the mid-game is to send duplicate pets of the Common, Uncommon, Rare, and Epic rarities to the lab instead of selling them for small amounts of cash. Your active pets in the base generate Money naturally, so the tiny sale price isn't worth much — a fusion at least gives you a shot at a heavy egg of that species. If you'd rather sell after all, the selling pets guide explains that route.