Game guide

My Pet Grumble Guide: The basic growth cycle

My Pet Grumble!

My Pet Grumble!, Playing 48, Rating 86.7%

Creator My Pet Grumble!

Playing 48

Rating 86.7%

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About

Overview

My Pet Grumble! lets you raise Grumble, the creature from DOORS, as your own pet. Your Grumble keeps growing even while you are off playing other Roblox games, so the loop is less about constant attention and more about checking in at the right moments. This guide covers the core growth cycle, feeding, sending Grumbles to The Nest, and the badges you can earn along the way.

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What is on this page

Contents

01 The basic growth cycle Step 02 Feeding your Grumble Tips 03 The Nest and what comes after Tips 04 Playing with other people Check 05 All eight badges Table 06 Glossary Words 07 Common questions FAQ

The basic growth cycle

Step

In short Grumble grows on its own, so your job is to check in regularly and act on what you find.

Your Grumble gets bigger while you are away playing other Roblox games, which means you do not need to sit in this game all day. Popping back every few hours is enough to stay on top of things.

Open the game check Grumble's current state and see how much it has grown since your last visit.
Play with Grumble spend a little time in the game to interact and track its progress.
Head out go play other Roblox games; Grumble will keep growing in the background.
Check in every few hours return to see how things have changed and take care of anything Grumble needs.
Send Grumble to The Nest once it reaches adulthood, set it to work there and receive a new Grumble to raise.

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Feeding your Grumble

Tips

In short Grumble has clear food preferences, and paying attention to them is the easiest way to earn two of the eight badges.

Grumble is not happy eating just anything. It will push back on foods it dislikes, and it reacts with visible enthusiasm to the ones it loves. Watch its response each time you offer something.

Tips worth knowing

Forcing food on Grumble when it does not want it is tied to the Picky Eater badge — Grumble's protest is the trigger.
Feeding Grumble something it genuinely enjoys unlocks the Happy Eater badge, so keep an eye out for the positive reaction.
Healthy food is not automatically welcome — Grumble can reject it just as readily as anything else.

The Nest and what comes after

Tips

In short Sending Grumble to The Nest is not a goodbye — it is the start of the next round.

When Grumble reaches adulthood, The Nest is where it goes to work. Releasing it there lets you begin raising a brand-new Grumble. The process then repeats from the beginning.

Tips worth knowing

Grumble must reach adulthood before you can send it to The Nest.
Releasing a grown Grumble into The Nest rewards you with a new one to raise.
A Grumble you have sent away will still show up to visit you occasionally.
Completing this step unlocks So long, old pal.

Playing with other people

Check

In short Up to ten players share a room, and at least one badge involves interactions between them.

Up to ten players can be in a room at the same time.
The Battle of the Kings badge comes from a notable encounter with another player.

All eight badges

Table

In short Each badge points at a specific action or event, so use the list to figure out what you still need to do.

The table below covers every badge currently in the game.

Badge	How to unlock it
Special Float	Have something appear on your Grumble's forehead.
Picky Eater	Offer Grumble a food it refuses to eat.
Infected	Have your Grumble become a Scrumble.
Revenge	Have your Grumble get stepped on and come back from it.
So long, old pal.	Send a fully grown Grumble off to The Nest.
No! I don't want that!	Spend a lot of in-game currency on something Grumble rejects.
Happy Eater	Feed Grumble something it loves.
Battle of the Kings	Take part in a notable encounter with another player.

Glossary

Grumble: The creature from DOORS that you raise as a pet in this game.
Scrumble: The state Grumble enters when it becomes Infected — a distinct condition tied to its own badge.
The Nest: The place where adult Grumbles are sent to work, which rewards you with a new Grumble to raise.

Common questions

FAQ

Does Grumble grow when I am not in the game?

Yes. Grumble grows larger while you are playing other Roblox games, so you do not need to stay in My Pet Grumble! the whole time. Checking in every few hours is enough to keep up with its progress.

Do I need Robux to play?

No. The game does not earn Robux from gamepasses or microtransactions, and nothing in the game requires you to spend any.

Will I lose my Grumble forever when I send it to The Nest?

Not entirely. A Grumble you release into The Nest will still visit you from time to time. You also receive a new Grumble to raise once the old one has been sent off.

Updated Oct 30, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.

My Pet Grumble! My Pet Grumble!, Playing 48, Rating 86.7%

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