Plants Vs Brainrots Merge Madness update patch notes

The Plants Vs Brainrots Merge Madness update went live on November 8, 2025. Introducing the new Merge Madness Event, this update involves fusing different plants and brainrots to create unique units with the Mutations of both. The event can be accessed from the Central Island, and performing fusions will also grant you various prizes.

This update is primarily focused on new Mutations and Mutation merging, both of which can be done as part of the Merge Madness Event. In addition to these elements, the update adds 12 new Brainrots, new Brainrot Invasion missions, a new Biome, and more.

Everything new in Plants Vs Brainrots Merge Madness update

Merge Madness Event

The Mutation Machine (Image via Roblox)

• Merge mutated Plants or Brainrots to unlock rewards and progress through the event.
• Combine two of the same plant with different Mutations for a stronger plant variant with both Mutations.

Weather

• New weather that spawns naturally.
• The new weather applies new Mutations when active.

Mutations

• Various new Mutations.

Brainrots

• Two new Admin Brainrots.
• Eight new Brainrots.
• Two new Fused Brainrots.

Brainrot Invasions

• 25 new Story missions.
• Completing them grants you access to the Cherry Blossom Biome.
• The Cherry Blossom Biome is unlocked after the Desert and Jungle Biomes.

Rebirths

• Two additional Rebirth levels: Level 10 and Level 11.

Brainrot of the week

• Introduced a new Brainrot of the week.
• Added new rewards for finding the Brainrot of the week.

Quality-of-life improvements

• Various bug fixes.
• Various performance improvements.

About the Merge Madness Event

The Merge Madness Event (Image via Roblox)

The Merge Madness Event is a new event introduced to the experience with the update of the same name. Available on Central Island, this event involves fusing different plants or brainrots together to create more potent variants. Its progression system requires you to fuse the units to unlock various rewards, which include Cash, gear, and more.

This event is scheduled to end on November 15, 2025, which is when it will be replaced with a brand-new event. The final rewards for completing the event are Biohazelino, a Plant Seed, and Dr Flalarino, a Brainrot.

Also read: Unique Roblox username ideas for new players

FAQs on Plants Vs Brainrots

When was the Merge Madness update released in Plants Vs Brainrots?

The Merge Madness update was released on November 8, 2025.

How many new Brainrots did the Merge Madness update add to the experience?

The Merge Madness update added a total of 12 new Brainrots.

How do I unlock the Cherry Blossom Biome in Plants Vs Brainrots?

The Cherry Blossom Biome can be unlocked by clearing Brainrot Invasion stages 51-75.

Edited by Swapnil Joshi