Pet Simulator 99 Codes (September 2026)
There are no working Pet Simulator 99 codes right now. We check every day and list new ones the moment they appear.
Coin Arcade key art: a Gargantuan pet from the September 5, 2026 update. Image: BIG Games.
Pet Simulator 99 has no free promo codes. BIG Games has never published a public code for the game, and the Redeem box in the Exclusive Shop only accepts single-use merch codes that ship with official plushies and toys, each unlocking one Huge or Titanic pet. That has not slowed the game down: it has passed 2.6 billion visits and usually has 60,000 to 70,000 players online at once. This page explains what the merch codes are, how to redeem one, and why the free-code lists you see on YouTube never work. We re-check daily in case BIG Games changes its policy.
- DeveloperBIG Games Pets
- PlatformRoblox
- Working codes0
- RewardsMerch-code Huge and Titanic pets
Active codes 0 working
Click a code to copy itHow to redeem Pet Simulator 99 codes
- 01Open Pet Simulator 99 on a desktop computer. Since Update 4 codes can only be redeemed on desktop, not on mobile or console.
- 02Open the Exclusive Shop: it is the second tab from the left on the bottom bar (the shopping-cart icon), or reach it through your inventory.
- 03Scroll to the very bottom of the shop to the Codes section and press the green Redeem button.
- 04Type or paste the code from your plush tag or product card exactly as printed (it is case-sensitive) and press Redeem again. The pet goes to your inventory with a seven-day trade hold.
Codes are case-sensitive. Copy them straight from the list above rather than typing them. If a code returns "invalid", it has usually expired within the last few hours; check back, we update this page daily.
About Pet Simulator 99
Pet Simulator 99 is the fourth game in BIG Games' Pet Simulator series and has been live on Roblox since December 1, 2023. The loop is simple: your pets break coin piles and diamond blocks, coins buy eggs, eggs hatch stronger pets, and stronger pets unlock the next area. There are more than 3,000 pets to collect across four main worlds (Spawn, Tech, Void and Fantasy), 274 areas and side worlds for fishing and farming. Diamonds are the premium currency you earn in-game, spent on upgrades, enchants and the machines that fuse five pets into Golden, Rainbow and Shiny versions. Huge, Titanic and Gargantuan pets sit at the top of the economy; their power scales off your best normal pet, so they stay useful all game. Rebirth once and you unlock the Trading Plaza, a separate 50-player server with booths, an auction board and a trading terminal. The official Roblox page shows the current pet count and player numbers.
Merch codes are not promo codes
Most Roblox games hand out codes on X or Discord that anyone can redeem. BIG Games does not. The only codes Pet Simulator 99 accepts are merch codes: a printed, one-time code packed with each official plush, toy, rug or Lucky Block. A HUGE Cat plush gives a Huge Cat, a HUGE Dragon plush gives a Huge Dragon, and the Titanic balloon-cat plushies give Titanic pets. Since July 2025 merch has been sold through an in-game Merchandise Shop rather than the BIG Games web store, with orders limited to the United States. Once a code is redeemed it is dead for everyone else, which is why every code copied from a YouTube video or a codes list fails. Pets from codes also carry a seven-day trade hold. The community wiki keeps the full product-to-pet table, and the BIG Games developer blog posts each update, most recently the Coin Arcade update of September 5, 2026 with five arcade zones, five retro minigames, hourly raffles and 12 new arcade pets.
Where new codes come from
Checked against the BIG Games X account, the BIG Games developer blog, the BIG Games YouTube channel and the official Discord. None of them has ever posted a public Pet Simulator 99 code; if that changes we will list it here the same day.
PET SIMULATOR 99 - OUT NOW!
— BIG Games (@BuildIntoGames) on X
Official Pet Simulator 99 links
Expired codes
These no longer work. Listed so you can check whether a code you found elsewhere is dead.
Pet Simulator 99 codes FAQ
Are there free Pet Simulator 99 codes?
No. BIG Games has never released a public promo code for Pet Simulator 99. The only codes the game accepts are single-use merch codes that come with official plushies and toys. Any site or video promising free diamond or Huge pet codes is either listing used merch codes or made-up strings.
Why do the codes I found on YouTube say invalid?
Because they are merch codes someone already redeemed, or they were never real. A merch code is tied to one physical product and dies the moment it is used, so a code shown on screen in a video was consumed long before you saw it.
What do merch codes give?
One exclusive pet per product. HUGE plushies give the matching Huge pet (Cat, Dog, Dragon, Corgi, Axolotl and others), Titanic plushies give Titanic pets, the Lucky Block gives a random Huge, and in-game Merchandise Shop items currently include Titanic pets such as the Titanic Ancient Dragon. The wiki keeps the full product table.
Can I redeem a merch code on mobile?
Not at the moment. Since Update 4 the Redeem button in the Exclusive Shop only works on desktop. Log in on a PC or Mac, redeem the code there, and the pet is on your account everywhere.
Can I trade a pet I got from a code?
Yes, after a seven-day holding period. Pets and items redeemed from merch codes cannot be traded for seven days from the moment you redeem them; after that they trade like any other pet.