0 codes active right now.
Looking for Pet Simulator 99 codes? Here's the honest answer: BIG Games doesn't release free-Diamond codes for PS99. The only codes that work ship inside official physical merch — every site advertising "working PS99 codes" for free Diamonds is fake.
Working right now
Step by step
- Open Pet Simulator 99 and press Esc to open Settings.
- Find the codes box (this is used for codes from official merchandise).
- Enter a merch code exactly and redeem.
Expired codes
Kept for reference. These no longer work.
Are there any Pet Simulator 99 codes?
Short answer: no — there are no free Pet Simulator 99 codes, and there never really have been. Unlike most Roblox games, BIG Games (the PS99 developer) chose not to run a public code system for free Diamonds or boosts. The only codes that work in PS99 are the ones printed inside official physical merchandise (toys, mystery packs), which unlock exclusive in-game items tied to that product — not free currency.
Why doesn't Pet Sim 99 have codes?
BIG Games designed PS99's economy around in-game progression and its merch program rather than promo codes. That's a deliberate choice: it keeps the Diamond economy tight and pushes rewards through gameplay and official products. So when you search "PS99 codes" and find a list of working codes for thousands of free Diamonds, those codes are fabricated — they don't exist in the game.
How to spot fake "PS99 codes" sites
- They list long, generic codes promising large Diamond amounts ("PS99DIAMONDS5000").
- They ask you to visit a "generator" or complete a survey / human verification — always a scam.
- They never link to an official BIG Games source, because there isn't one.
Never enter your Roblox login anywhere outside roblox.com, and never use a "free Diamond generator." There is no legitimate way to generate Diamonds — see our guide to Roblox scams.
How to actually get Diamonds in Pet Sim 99
- Play the game — collect coins, hatch pets, and break Diamond breakables across the worlds.
- Stack luck before opening exclusive eggs to pull Huge and Titanic pets worth far more than any code — model it with the hatch odds calculator.
- Trade up — flip pets you don't need; check fair value with the trade value calculator.
- Official merch — physical BIG Games products include real codes for exclusive items.