Last checked: August 18, 2026
Pet Simulator 99 Update [Fiesta Forever] – Patch Notes & What's Next
Updated August 18, 2026 — Log created for Update 89; pets cross-checked against BIG Games' index.
· August 18 — published; next event dated
· August 15 — Update 89 "Fiesta Forever" shipped
· August 8 — Update 88 "Piñata Maze" shipped
Pet Simulator 99's current patch is Update 89, "Fiesta Forever", published by BIG Games on August 15, 2026. It turns the Piñata Maze into an endless Eternal Maze, adds Cursed bosses at maze Tier 90,000, and restarts the Gargantuan race at level 400,000. No code.
What's new in Fiesta Forever
The Eternal Maze is the headline: 5 minutes per run to smash 4 areas, beat a boss, then loop deeper. Entry is free, 3 runs a day, and bailing early still banks depth — your deepest run sets your Leaderboard place. Cursed Mode unlocks at Tier 90,000, paying 3x XP, 5x Huge & Titanic odds and 5 boss loot rolls.
The rest is scale. The cap moved from 150,000 to 400,000; reaching it claims the Gargantuan, and only the #1 finisher gets the Rainbow Shiny. Below 150,000 you grind at 10x XP. The Upgrade Machine went from 4 tracks to 12, adding Boss Damage and Better Titanic Egg Luck, and a Fiesta Boss Key opens a secret room whose boss is 5x tougher.
From BIG Games' public pet index, pulled August 18, 2026:
| Limited pet | Source | Exist |
|---|---|---|
| Gargantuan Sombrero Cat | Race, or Prize Room Titanic egg | 68 |
| Titanic Mariachi Capybara | Prize Room | 2,271 |
| Titanic Catrina Cat | Push your luck | 887 |
| Titanic Desert Scorpion | Leaderboard / League | 0 |
| Huge Mariachi Coati | Maze (Hard) | 54,301 |
| Huge Desert Coyote | Maze (Easy) | 48,383 |
| Huge Marigold Manatee | Push your luck | 37,056 |
| Huge Marigold Donkey | Leaderboard / League | 0 |
Feed the Boosts Machine Fiesta Coins; more coins, longer boosts, stacking to 6 hours each:
| Fiesta Coin boost | Effect |
|---|---|
| Fiesta Damage | +500% maze damage |
| Fiesta Key Luck | +200% Fiesta Key drops |
| Fiesta Huge Luck | +400% Huge Egg odds |
| Fiesta Titanic Luck | +2,000% Titanic Egg odds |
| Fiesta Gargantuan Luck | +400% Gargantuan odds |
What this means for players
Free play caps at 15 minutes of maze a day, so upgrades decide your output. Boss Damage and the boss-luck tracks change what a five-minute run returns. Roster decides clear speed: see our best pets list, 2026 tier list and beginner guide.
Feed Fiesta Titanic Luck first: at +2,000% it dwarfs the rest of that panel.
The two zeroes matter: Titanic Desert Scorpion and Huge Marigold Donkey are League and Leaderboard payouts, so none exist yet as of August 18, 2026. They settle at event end. Only 68 Gargantuan Sombrero Cats exist game-wide.
Our radar's 7-day window (August 11–18, 2026) medians 128,113 concurrent players. No reading before August 16 topped 136,324; every one since has cleared 151,000, peaking at 165,250. As of August 18, 2026: 2,602,261,521 visits, 2,186,854 favourites, a 94.7% like ratio, servers capped at 10 players.
Codes with this update
Update 89 shipped no code: the dev blog runs from the Eternal Maze to the bug fixes without one. BIG Games has never issued public promo codes for PS99, only one-time merch codes with physical products. Full detail: our codes page and verification method; pack advice, the Robux guide.
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Update history
- August 15, 2026 — Update 89, "Fiesta Forever": Eternal Maze, Cursed Mode at Tier 90,000, cap to 400,000, Fiesta Boss Key, Upgrade Machine 4 → 12 tracks, limited Mariachi, Catrina and Marigold pets.
- August 8, 2026 — Update 88, "Piñata Maze": the Fiesta Maze dungeon, piñata hatching instead of eggs, press-your-luck Fiesta Points, 12 new Fiesta pets, and the first race to Level 150,000 for the Gargantuan Sombrero Cat.
What's next for Pet Simulator 99?
BIG Games Pets' own Roblox event listing already dates the next drop: August 22, 2026 at 16:00 UTC, subtitled "FEELING LUCKY?", teasing a lucky board, bouncing pets and lucky blocks. No update number or pet names. It also closes the Fiesta window, making that the deadline on the limited pets. Watch the Roblox page or our PS99 hub.
How we sourced this
Patch contents: BIG Games' dev blogs for Update 89 and Update 88. Pet names and exist counts: BIG Games' documented public API (live game data, not the blog's wording). Player counts and the August 22 window: Roblox's games and virtual-events endpoints (universe 3317771874). TimeSaver corroborated Update 88; Fandom's PS99 log stops in April 2026.
Frequently Asked Questions
Update 89, Fiesta Forever, published August 15, 2026: the endless Eternal Maze, Cursed Mode at Tier 90,000, the cap raised to 400,000, and a second Gargantuan Sombrero Cat race. No code.
Reach maze Tier 90,000. Cursed bosses then pay 3x XP, 5x Huge and Titanic odds and 5 boss loot rolls, with the Huge Desert Coyote and Titanic Mariachi Capybara among the drops.
BIG Games' own Roblox event listing schedules it for August 22, 2026 at 16:00 UTC, subtitled FEELING LUCKY, teasing a lucky board, bouncing pets and lucky blocks. Contents are not confirmed.
More Pet Simulator 99 guides
Also: PS99 vs Steal a Brainrot and our Steal a Brainrot log.