Pet Lab Guide: The core loop
About
OverviewPet Lab is a Roblox simulation game where you breed, mutate, and merge pets to create unusual animals, then use the coins they generate to build a tycoon house that earns passive income. Up to four players can share one room.
What is on this page
Contents
The core loop
Step
Each session follows the same cycle. You care for pets, collect the coins they produce, and reinvest those coins into merging pets or building tycoon houses. Houses generate coins passively.
- Merge pets combine two pets to create a new one and push your star count higher.
- Build a house spend accumulated coins on a tycoon house to start earning passively.
- Expand add more houses over time to multiply that passive income.
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Mutation and merging explained
Table
These two systems look similar but do different things.
| Mutation | triggered by what you feed your pet, altering its appearance and properties. |
| Merging | combining two pets into one, which increases the star count of the result. |
| Shiny | a rare outcome of merging where the new pet glows; it depends entirely on luck. |
| Star levels | climb through 10 stars and all the way to 15 stars by merging repeatedly. |
Special quests worth chasing
Tips
- Complete the Axolotl Quest to earn the Axolotl King badge.
- Finish the Fossil objective to earn the Paleontologist badge.
- Steal the snake's possession to earn the Snek badge.
Reaching 10 and 15 stars
Step
Star level goes up each time you merge two pets. The path to 15 stars is a long chain of merges.
- Merge consistently to raise your star count toward 10 stars and then 15 stars.
- Watch for shinies any merge can produce a shiny pet by chance.
Passive income and house building
Summary
A tycoon house keeps earning coins passively. Building several of them scales up your resources.
- Passive income coins accumulate on their own from tycoon houses.
- Multiple houses each additional house adds to your income rate.
- Rare pets they produce more coins on their own, complementing what the houses generate.
Glossary
Glossary- Mutation
- A change to a pet's appearance and properties caused by what you feed it.
- Merge
- Combining two pets to produce a new pet with a higher star count.
- Star level
- A measure of how many times a pet's lineage has been merged, going up to 15 stars.
- Shiny
- A rare glowing pet that can appear as a lucky result of a merge.
- Passive income
- Coins earned automatically over time from tycoon houses.
- Rare pet
- A pet that generates more coins than a common pet.
Common questions
FAQHow do I get a shiny pet?
Shiny pets are a random outcome of merging. There is no guaranteed method — the more you merge, the more chances you give yourself.
What is the difference between mutating and merging?
Mutating changes the look and nature of a single pet based on what you feed it. Merging combines two pets into one and raises the star level of the result.
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