Pet Simulator 99 Codes (November 2026)

Pet Simulator 99 is the heavyweight of Roblox pet collecting, and it is not close. Built by BIG Games Pets and fronted by Preston, it hands you an egg, hatches your first pets, and then watches them smash coins, crates and anything else breakable while you march through zone after zone unlocking new areas. There are more than 3,000 pets to collect, eggs that range from the everyday to the absurdly rare, and a constant pull to rebirth, trade and hatch just one more time.

It is also a game surrounded by fake code lists. Search for Pet Simulator 99 codes and you will find pages promising free Huge pets, diamond bundles and secret strings. Almost none of it is real, and this post exists partly to save you the wasted clicks: we checked the primary code sources carefully, and the honest answer is below.

All working Pet Simulator 99 codes

There are no working public Pet Simulator 99 codes we could verify right now — and that is not a gap in our research, it is how BIG Games runs this game. Pet Simulator 99 has never had the usual free-for-everyone promo codes that most Roblox games hand out. Its code box exists for two narrower things: single-use codes bundled with official merchandise, and occasional promo codes handed out through campaigns with content creators. A merch code works once, on one account, and then it is spent — which is why no shared list of them can ever be genuine. One particular string is shared endlessly on social media as a working code, but BIG Games has never confirmed it on any official channel, so we do not list it.

How to redeem Pet Simulator 99 codes

If you buy official merchandise that includes a code, or receive a genuine promo code through a creator campaign, here is how redemption works:

1. Launch Pet Simulator 99 on Roblox and play for at least five minutes — promo codes will not redeem before that.
2. Open the Exclusive Shop from the shopping cart menu.
3. Find the Redeem option and type your code into the box exactly as printed.
4. Press Redeem to claim your reward. Note that merch codes can currently only be redeemed on a computer, not on a phone or tablet.

How to get more Pet Simulator 99 codes

Realistically, there are three routes. Buy official BIG Games merchandise that advertises an included code, and check the product description to be sure the code is part of that item. Watch the BIG Games Discord server and the studio's X account, where any genuine promo campaign would be announced. And keep an eye on creator campaigns, since BIG Games says promo codes are shared that way. Anything else — a website promising a universal code for a free Titanic or Huge pet — is not coming from BIG Games.

Why are my Pet Simulator 99 codes not working?

Usually, because the code was never real. Strings copied from video descriptions and random list sites are typically made up, long expired, or merch codes that somebody else already redeemed. A genuine merch code fails if it has been used before, if it is typed with a typo, or if you try to redeem it on mobile. One warning that matters: a real code is only ever entered inside the game itself. If a site or video asks for your Roblox password, or tells you to download something to unlock a code, close it — BIG Games itself warns players about exactly that scam.