The new Fuse Machine Update for Steal a Brainrot in Roblox is adding a bunch of new content, as revealed through its patch notes.

The Steal a Brainrot update adds a bunch of new Brainrots to this Roblox experience. You will not only be able to unlock more secrets but also get completely new Brainrots. However, the biggest part of this update is likely the Fuse Machine.
The update went live on August 1, 2025. Here is all the information from the patch notes of the Steal a Brainrot Fuse Machine Update.
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Patch Notes for Steal a Brainrot Fuse Machine

Fuse Machine
Combine up to 4 Brainrots to fuse a new Brainrot with 12 new Brainrots from the Fuse Machine (2 Secrets).
New Weather System
- Rain
- Snow
- Starfall
New Grab System
Players will be able to grab their own Brainrots to use for the Fuse Machine and rituals.
New Brainrots
- Sigma Boy (Legendary)
- Trippi Troppi Troppa Trippa (Brainrot God)
- Dragon Cannelloni (Secret)
Secret Concert Event
I will start this event 15 minutes after the update. It will have a new trait that comes with it.
That was everything to know about the Fuse Machine update for Steal a Brainrot. You can obtain a bunch of new Brainrots, use the new Grab system, and also experience secret concert events.
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FAQs About Fuse Machine Update in Steal a Brainrot
How To Use the Fuse Machine in Steal a Brainrot?
You will be able to find the Fuse Machine in the center of the map. Approach it, and it will tell you to select four random Brainrots. Head back to your base to do so. You will be able to use the Grab system to bring them to the Fuse Machine.
How Does the Grab System Work in Steal a Brainrot?
Instead of just selling, another option will appear once you walk up to a Brainrot you have: the Grab button. You can use this button to move them around or even move them to the Fuse Machine.
Does the Fuse Machine Have a Rarity Mechanic?
Yes, the Fuse Machine has a higher chance of fusing into lower-rarity Brainrots. You might have to try multiple times to get an extremely rare Brainrot.

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