Game Codes
Pet Simulator 99 Codes (September 2026)
Every working Pet Simulator 99 code, tested today. Redeem them for Diamonds, boosts, eggs before they expire.
Marcus ValeSenior Guides Editor
Pet Simulator 99
Last checked: September 11, 2026 — every code below was tested today and works.
Pet Simulator 99 codes give diamonds, boosts and eggs. BIG Games ties most of them to update milestones and social follows, and they tend to last a long time once released.
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TipDiamonds from codes are best spent on egg-hatch speed upgrades early. Everything else scales off how fast you hatch.
How to redeem Pet Simulator 99 codes
- 01Open Pet Simulator 99.
- 02Click the Store button at the bottom of the screen.
- 03Scroll to the Codes section and paste a code.
- 04Press Redeem to claim your diamonds or boost.
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.
Where new codes come from
BIG Games shares new codes through its Discord, X account and in-game update boards.
Expired codes
These no longer work. Listed so you can check whether a code you found elsewhere is dead.
None yet
Pet Simulator 99 codes FAQ
Can codes be redeemed twice on different accounts?
Yes. Codes are per account, so alt accounts can redeem the same code.