Pet Simulator 99 Update 12, also known as the Prison Update, is the successor to the Deep Backrooms and the twelfth in-game patch iteration. A new event world, dubbed Prison World, also debuted in this update and can be accessed in Void World after attaining Rebirth 8. Four new Prison Eggs and three Huge Pets are also up for grabs in the Prison Update.This article sums up all the changes introduced in Update 12, along with all the newly added content.Pet Simulator 99 Prison Update Featured below are the official patch and gameplay notes of Update 12 and Prison World:You’re wanted for arrest in the new Prison World!Complete quests to unlock all five new prison areas.Starting with the Prison Tower and ending with the Police HQ!Find more upgrades, relics, vending machines, and rewards in these areas.Located in the Void Hub through the Black Hole!Prison PetsHatch nine pets from the new areas!Including our favorites: Prison Cow, Detective Cat, and Guard CorgiPrison EggsIntroducing 4 new eggs!Hatch your way through the Rusty Egg to the Lootbag Egg.Prison CellsUnlock Prison Cells to find friends and hidden treasures!Each cell contains rewards that will help you progress!Prison KeysCollect Prison Keys to open locked cells!Each cell has a reward chest which includes a HUGE pet chance!Opening cells with the Gold Prison Key has a 10x HUGE chance!These drop randomly in your best area! Not tradable!The key drop chances increase by 5% with each friend online (max 20%)!Pet Simulator 99 Update 12 Changes:Added Golden Huge Happy Rock in the trading terminalFixed the bug where the character would walk strangelyRemoved Herobrine and the backrooms event!New RankProgress to Rank 29!Void CurrencyGet collecting the new currency, Void Coins!There’s also the Void Bar which equals 1 million Void Coins.Also Check: How to get Hoverboard in Pet Simulator 99Pet Simulator 99 Update 12 Void HubVoid Hub was introduced in the Prison Update (Image via Big Games)Here is the official description of the Void Hub:"LET’S GO TO THE VOID! Jump into the black hole to get sucked into the new dimension! Not so fast! Rebirth 8 and Area 199 required!"Void Spinny WheelNew dimension means a new wheel!The Void Spinny Wheel can be used with the Void Spinny Wheel Ticket!Better rewards than the previous wheel, including a new HUGE Atomic Axolotl.Located in the Void Hub through the Black Hole!Void Chest & KeyIntroducing the Void Chest & Key with the new Huge Holographic Cat!Located in the Void Hub through the Black Hole!Void CurrencyGet collecting the new currency, Void Coins!There’s also the Void Bar which equals 1 million Void Coins.Pet Simulator 99 Prison Update EventsClaim free rewards from the Global Events interface (Image via Roblox||Big Games)Global EventComplete Prison Keys quests to unlock rewards!Each quest completed is another reward.Plus, Global Event Bags are rewarded every 25 levels!Collect quickly as this event ends in two weeks!Clan EventIntroducing the Fragmented Clan Battle!Collect the most prison keys!Prison Keys are 1 point and Golden Prison Keys are 10 points.The clans with the most points wins!Clan Battle Rewards are as follows:#1 Place:Gold clan medalHuge Rainbow Fragmented Dominus#2-3 Place:Huge Golden Fragmented Dominus#4-10 Place:Huge Fragmented DominusTop 10:Silver clan medalFragmented Hoverboard, Fragmented Booth, and Clan GiftTop 50:Bronze clan medalFragmented Booth and Clan GiftTop 500:Clan GiftNew Achievement in Pet Simulator 99 Prison Update Break Superior Mini Chests for 50k Bag of Diamonds.That concludes all the changes implemented in the latest Pet Simulator 99 update. Stay tuned to Sportskeeda's Roblox section to get wind of the latest metaverse guides, news, and more.