Masteries turn the things you repeat in Pet Simulator 99 into permanent account progress. Each track rewards a different play loop, so the smart target is the one whose perks match what you already hatch, farm, upgrade, open, or spend.
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Core farming and hatching
These tracks grow from breaking objects, hatching eggs, and managing pet stacks. They fit long sessions well because ordinary farming and hatching can keep the XP moving in the background.
Breakables Mastery
Breakables Mastery rewards the core PS99 loop of smashing objects for coins, diamonds, and drops. It is one of the easiest masteries to progress while you are already farming.
- Activity
- Farming
- Best for
- Long farming sessions and loot grinding
- Notable perks
- Better loot, faster respawns, longer flags, and mini-chest bonuses
- Level 99
- +100% respawn speed, +21 flag slots, +50% mini-chest spawn chance, 2x flag duration, 5x mini-chest loot, plus Breakables Mastery Cape
- Grind style
- Natural AFK or active farming grind
- Shortcut note
- Usually worth leveling through normal farming unless you need the final loot perks quickly.
Eggs Mastery
Eggs Mastery is built for players who spend long sessions hatching. Its best perks reduce hatch friction and make large hatch sessions cheaper and faster.
- Activity
- Hatching
- Best for
- Players who hatch constantly or chase pet variants
- Notable perks
- Cheaper eggs, faster hatch animation, bonus egg slots, and golden/rainbow hatch chances
- Level 99
- +5 bonus egg slots, 30% cheaper eggs, and Eggs Mastery Cape
- Grind style
- Heavy hatch grind
- Shortcut note
- A strong shortcut target for hatch-focused players because normal eggs give very slow progress.
Pets Mastery
Pets Mastery improves the systems that turn pet stacks into stronger or more useful pets. It overlaps with Fuse Mastery because fusing pets can train both tracks.
- Activity
- Pet progression
- Best for
- Players converting, fusing, or enrolling large pet stacks
- Notable perks
- Faster machines, better gold/rainbow chances, lower pet requirements, and better Daycare rewards
- Level 99
- -2 pets required for golding and rainbowing, 2x Daycare speed and diamond loot, plus Pets Mastery Cape
- Grind style
- Machine and inventory-management grind
- Shortcut note
- Useful for players who hate pet conversion chores, but fusing can also train it over time.
| Image | Name | Description | Activity | Best for | Notable perks | Level 99 | Grind style | Shortcut note |
|---|---|---|---|---|---|---|---|---|
| Breakables Mastery | Breakables Mastery rewards the core PS99 loop of smashing objects for coins, diamonds, and drops. It is one of the easiest masteries to progress while you are already farming. | Farming | Long farming sessions and loot grinding | Better loot, faster respawns, longer flags, and mini-chest bonuses | +100% respawn speed, +21 flag slots, +50% mini-chest spawn chance, 2x flag duration, 5x mini-chest loot, plus Breakables Mastery Cape | Natural AFK or active farming grind | Usually worth leveling through normal farming unless you need the final loot perks quickly. | |
| Eggs Mastery | Eggs Mastery is built for players who spend long sessions hatching. Its best perks reduce hatch friction and make large hatch sessions cheaper and faster. | Hatching | Players who hatch constantly or chase pet variants | Cheaper eggs, faster hatch animation, bonus egg slots, and golden/rainbow hatch chances | +5 bonus egg slots, 30% cheaper eggs, and Eggs Mastery Cape | Heavy hatch grind | A strong shortcut target for hatch-focused players because normal eggs give very slow progress. | |
| Pets Mastery | Pets Mastery improves the systems that turn pet stacks into stronger or more useful pets. It overlaps with Fuse Mastery because fusing pets can train both tracks. | Pet progression | Players converting, fusing, or enrolling large pet stacks | Faster machines, better gold/rainbow chances, lower pet requirements, and better Daycare rewards | -2 pets required for golding and rainbowing, 2x Daycare speed and diamond loot, plus Pets Mastery Cape | Machine and inventory-management grind | Useful for players who hate pet conversion chores, but fusing can also train it over time. |
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Item upgrade and consume loops
These tracks reward players who regularly upgrade or use potions, enchants, and fruit. Their value comes from making familiar item routines cheaper, stronger, or less hands-on.
Potions Mastery
Potions Mastery makes timed boosts easier to use and upgrade. It is strongest for players who regularly farm with potion timers active.
- Activity
- Potion upgrades
- Best for
- Players who use boost timers and craft higher potion tiers
- Notable perks
- Longer potion duration, cheaper upgrades, higher tier access, auto-claiming, and multi-type upgrading
- Level 99
- 2x potion duration, upgrade multiple potion types at once, plus Potions Mastery Cape
- Grind style
- Resource-spending and upgrade-machine grind
- Shortcut note
- Good shortcut value if you use high-tier potions often and want the duration or upgrade perks.
Enchants Mastery
Enchants Mastery supports book upgrades and stronger loadouts. It matters most once your farming setup depends on higher-tier enchant books.
- Activity
- Enchant upgrades
- Best for
- Players building stronger enchant loadouts
- Notable perks
- Cheaper upgrades, higher tier equip/craft access, stronger enchant power, and multi-type upgrading
- Level 99
- 25% power from enchants, upgrade multiple enchant types at once, plus Enchants Mastery Cape
- Grind style
- Upgrade-machine and book-stack grind
- Shortcut note
- Strong for loadout-focused players because tier access and enchant power affect many farming setups.
Fruits Mastery
Fruits Mastery turns fruit from a small consumable habit into a stronger passive buff system. Its late perks are mostly about longer buffs and less manual eating.
- Activity
- Fruit use
- Best for
- Players who keep fruit buffs active
- Notable perks
- Longer fruit duration, cheaper rainbow fruit crafting, larger queues, and automatic fruit use
- Level 99
- Auto-eat normal and shiny fruit, reduced rainbow crafting cost, 30-fruit buff cap, plus Fruit Mastery Cape
- Grind style
- Consumable and crafting grind
- Shortcut note
- Better as a shortcut target if you actively use fruit buffs; casual players can train it gradually.
| Image | Name | Description | Activity | Best for | Notable perks | Level 99 | Grind style | Shortcut note |
|---|---|---|---|---|---|---|---|---|
| Potions Mastery | Potions Mastery makes timed boosts easier to use and upgrade. It is strongest for players who regularly farm with potion timers active. | Potion upgrades | Players who use boost timers and craft higher potion tiers | Longer potion duration, cheaper upgrades, higher tier access, auto-claiming, and multi-type upgrading | 2x potion duration, upgrade multiple potion types at once, plus Potions Mastery Cape | Resource-spending and upgrade-machine grind | Good shortcut value if you use high-tier potions often and want the duration or upgrade perks. | |
| Enchants Mastery | Enchants Mastery supports book upgrades and stronger loadouts. It matters most once your farming setup depends on higher-tier enchant books. | Enchant upgrades | Players building stronger enchant loadouts | Cheaper upgrades, higher tier equip/craft access, stronger enchant power, and multi-type upgrading | 25% power from enchants, upgrade multiple enchant types at once, plus Enchants Mastery Cape | Upgrade-machine and book-stack grind | Strong for loadout-focused players because tier access and enchant power affect many farming setups. | |
| Fruits Mastery | Fruits Mastery turns fruit from a small consumable habit into a stronger passive buff system. Its late perks are mostly about longer buffs and less manual eating. | Fruit use | Players who keep fruit buffs active | Longer fruit duration, cheaper rainbow fruit crafting, larger queues, and automatic fruit use | Auto-eat normal and shiny fruit, reduced rainbow crafting cost, 30-fruit buff cap, plus Fruit Mastery Cape | Consumable and crafting grind | Better as a shortcut target if you actively use fruit buffs; casual players can train it gradually. |
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Chest, key, and gift rewards
These tracks improve focused reward routes such as shops, key chests, gifts, Superior Chests, and Boost Exchange. Prioritize the route you actually use, because an untouched reward system cannot return the favor.
Economy Mastery
Economy Mastery improves the value of shops and vending machines. It is a practical grind for players who already sweep the map for items.
- Activity
- Shops
- Best for
- Players who use vending machines and merchants for items
- Notable perks
- Buy-all vending option, lower prices, faster restocks, more vending stock, and better merchant luck
- Level 99
- -50% merchant prices, automatic coin vending purchases, free coin vending items, plus Economy Mastery Cape
- Grind style
- Shop route and spending grind
- Shortcut note
- Usually easy to train if you run merchant and vending routes often.
Keys Mastery
Keys Mastery is for players who open key chests and combine key pieces. Its value depends on how often you actually use key-based reward routes.
- Activity
- Keys
- Best for
- Players opening key chests or managing key stacks
- Notable perks
- Chance to keep keys, better chest loot, combine-all keys, and free key chances while combining
- Level 99
- +25% loot from Fantasy, Crystal, Tech, and Void Chests, 2x free-key chances when combining, plus Keys Mastery Cape
- Grind style
- Key spending and combining grind
- Shortcut note
- Use shortcuts only if key opening is a major part of your routine or you dislike saving key stacks.
Superior Chests Mastery
Superior Chests Mastery is narrow but useful for players built around mini-chest spawns. It improves both how often the chests appear and how much they pay out.
- Activity
- Superior chests
- Best for
- Players farming Superior Mini Chest spawns and loot
- Notable perks
- Higher Superior Chest spawn chance and multiplied Superior Chest loot
- Level 99
- +50% Superior Chest spawn chance, 5x Superior Chest loot, plus Superior Chests Mastery Cape
- Grind style
- Chest-spawn farming grind
- Shortcut note
- A focused shortcut target only if Superior Chest farming is part of your setup.
Gifts Mastery
Gifts Mastery improves the reward items that pile up during normal play. It is especially useful when you open bundles, mini chests, and free gifts in bulk.
- Activity
- Gifts
- Best for
- Players opening reward items and collecting free gifts
- Notable perks
- Double-loot chances, faster Free Gift timers, better Charm Stone loot, and auto-claiming
- Level 99
- Faster Free Gifts, better Charm Stone loot, stronger double-loot chances, plus Gifts Mastery Cape
- Grind style
- Reward-opening and free-gift grind
- Shortcut note
- Useful if you open many saved gifts; otherwise it can grow slowly through normal rewards.
Boost Exchange Mastery
Boost Exchange Mastery is tied to buying temporary boost effects with Millionaire Bucks. It is strongest for players who plan farming sessions around those boosts.
- Activity
- Boost Exchange
- Best for
- Players who regularly buy boost effects
- Notable perks
- Cheaper boosts, stronger boosts, longer boost duration, and automatic boost buying
- Level 99
- Boosts are 40% more effective plus Boost Exchange Mastery Cape
- Grind style
- Boost spending grind
- Shortcut note
- Only prioritize if Boost Exchange is already part of your farming routine.
| Image | Name | Description | Activity | Best for | Notable perks | Level 99 | Grind style | Shortcut note |
|---|---|---|---|---|---|---|---|---|
| Economy Mastery | Economy Mastery improves the value of shops and vending machines. It is a practical grind for players who already sweep the map for items. | Shops | Players who use vending machines and merchants for items | Buy-all vending option, lower prices, faster restocks, more vending stock, and better merchant luck | -50% merchant prices, automatic coin vending purchases, free coin vending items, plus Economy Mastery Cape | Shop route and spending grind | Usually easy to train if you run merchant and vending routes often. | |
| Keys Mastery | Keys Mastery is for players who open key chests and combine key pieces. Its value depends on how often you actually use key-based reward routes. | Keys | Players opening key chests or managing key stacks | Chance to keep keys, better chest loot, combine-all keys, and free key chances while combining | +25% loot from Fantasy, Crystal, Tech, and Void Chests, 2x free-key chances when combining, plus Keys Mastery Cape | Key spending and combining grind | Use shortcuts only if key opening is a major part of your routine or you dislike saving key stacks. | |
| Superior Chests Mastery | Superior Chests Mastery is narrow but useful for players built around mini-chest spawns. It improves both how often the chests appear and how much they pay out. | Superior chests | Players farming Superior Mini Chest spawns and loot | Higher Superior Chest spawn chance and multiplied Superior Chest loot | +50% Superior Chest spawn chance, 5x Superior Chest loot, plus Superior Chests Mastery Cape | Chest-spawn farming grind | A focused shortcut target only if Superior Chest farming is part of your setup. | |
| Gifts Mastery | Gifts Mastery improves the reward items that pile up during normal play. It is especially useful when you open bundles, mini chests, and free gifts in bulk. | Gifts | Players opening reward items and collecting free gifts | Double-loot chances, faster Free Gift timers, better Charm Stone loot, and auto-claiming | Faster Free Gifts, better Charm Stone loot, stronger double-loot chances, plus Gifts Mastery Cape | Reward-opening and free-gift grind | Useful if you open many saved gifts; otherwise it can grow slowly through normal rewards. | |
| Boost Exchange Mastery | Boost Exchange Mastery is tied to buying temporary boost effects with Millionaire Bucks. It is strongest for players who plan farming sessions around those boosts. | Boost Exchange | Players who regularly buy boost effects | Cheaper boosts, stronger boosts, longer boost duration, and automatic boost buying | Boosts are 40% more effective plus Boost Exchange Mastery Cape | Boost spending grind | Only prioritize if Boost Exchange is already part of your farming routine. |
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Minigame and machine grinds
Fishing and Digging need focused minigame time, while Fuse grows through the Fuse Machine. These are clearer shortcut candidates when you want the perks but would rather skip the repeated action.
Fishing Mastery
Fishing Mastery is a focused minigame track. It does not train from every fishing-like activity, so the source minigames matter.
- Activity
- Fishing
- Best for
- Players chasing Deep Pool rewards and fishing Huge chances
- Notable perks
- Faster casting and catching, Deep Pool access, better Deep Pool Huge chance, larger bobber, and rainbow rod chance
- Level 99
- +50% chance to catch a Huge from Deep Pools, 2x rainbow rod conversion chance, plus Fishing Mastery Cape
- Grind style
- Focused minigame grind
- Shortcut note
- Good shortcut candidate if you dislike fishing but want Deep Pool perks.
Digging Mastery
Digging Mastery is another focused minigame track. It is most useful when you spend real time in the digging loop instead of only passing through it.
- Activity
- Digging
- Best for
- Players who farm digging rewards and minigame Huge chances
- Notable perks
- Better Digsite chest drops, more diamonds, better chest find odds, Mastery Chest access, Huge chance, and rainbow shovel chance
- Level 99
- +35% Digsite chest diamonds, +50% drops, +50% Mastery Chest Huge chance, 2x rainbow shovel chance, plus Digging Mastery Cape
- Grind style
- Focused minigame grind
- Shortcut note
- A shortcut makes sense only if you want digging rewards but do not enjoy the minigame loop.
Fuse Mastery
Fuse Mastery improves the Fuse Machine itself. It rewards players who regularly turn extra pets into stronger results.
- Activity
- Fuse Machine
- Best for
- Players turning pet stacks into better results
- Notable perks
- Chance for two pets, better fuse results, faster animation, guaranteed gold/rainbow results at high levels
- Level 99
- 5% chance to get two pets and minimum fuse lowered to 2 pets, plus Fuse Mastery Cape
- Grind style
- Machine and pet-stack grind
- Shortcut note
- Fusing also trains Pets Mastery, so active fusers may not need to spend a shortcut here first.
| Image | Name | Description | Activity | Best for | Notable perks | Level 99 | Grind style | Shortcut note |
|---|---|---|---|---|---|---|---|---|
| Fishing Mastery | Fishing Mastery is a focused minigame track. It does not train from every fishing-like activity, so the source minigames matter. | Fishing | Players chasing Deep Pool rewards and fishing Huge chances | Faster casting and catching, Deep Pool access, better Deep Pool Huge chance, larger bobber, and rainbow rod chance | +50% chance to catch a Huge from Deep Pools, 2x rainbow rod conversion chance, plus Fishing Mastery Cape | Focused minigame grind | Good shortcut candidate if you dislike fishing but want Deep Pool perks. | |
| Digging Mastery | Digging Mastery is another focused minigame track. It is most useful when you spend real time in the digging loop instead of only passing through it. | Digging | Players who farm digging rewards and minigame Huge chances | Better Digsite chest drops, more diamonds, better chest find odds, Mastery Chest access, Huge chance, and rainbow shovel chance | +35% Digsite chest diamonds, +50% drops, +50% Mastery Chest Huge chance, 2x rainbow shovel chance, plus Digging Mastery Cape | Focused minigame grind | A shortcut makes sense only if you want digging rewards but do not enjoy the minigame loop. | |
| Fuse Mastery | Fuse Mastery improves the Fuse Machine itself. It rewards players who regularly turn extra pets into stronger results. | Fuse Machine | Players turning pet stacks into better results | Chance for two pets, better fuse results, faster animation, guaranteed gold/rainbow results at high levels | 5% chance to get two pets and minimum fuse lowered to 2 pets, plus Fuse Mastery Cape | Machine and pet-stack grind | Fusing also trains Pets Mastery, so active fusers may not need to spend a shortcut here first. |
Level the loop you already play
Mastery unlocks at Rebirth 4, and each track gains XP from its own activity. Hatching will not quietly train Potions Mastery while you are busy elsewhere. Start with the loop you repeat most, then let normal play carry as much of the grind as possible.
A mastery can become useful before level 99. Discounts, faster actions, better rewards, automation, and access perks arrive along the path, so check whether the next useful reward helps your current routine before pouring resources into XP. The cape at the end is tidy, but the permanent perks do the real work.
Spend shortcuts where they remove friction
A Mastery XP Potion adds XP to the track you choose, while an Ultra Mastery XP Potion can finish a chosen track immediately. Save those shortcuts for a slow activity you dislike or for perks you will use often. Spending one on a track that already rises during your daily farming is usually paying to skip progress you were about to earn anyway.
Some loops overlap. Fusing pets can move both Pets Mastery and Fuse Mastery, which makes a pet-stack session more efficient than treating those grinds as strangers. Most other tracks are more specific, so make sure the action you are repeating actually feeds the mastery you want.
Treat capes as the finish line, not the plan
The normal cape earned at level 99 is cosmetic. The separate Master Skill Cape is the wider completion reward for maxing the mastery system, and it includes a diamond earn bonus. Chase that long goal if completion itself matters to you, but choose individual masteries for the perks that improve how you play now.
FAQ
When does Mastery unlock in Pet Simulator 99?
Mastery unlocks at Rebirth 4. Each track then gains XP from the activity tied to that system.
Which Pet Simulator 99 mastery should I level first?
Start with the track linked to the activity you repeat most or the perks your setup needs now. Long farming sessions naturally favor Breakables, heavy hatching favors Eggs, and regular item upgrades make Potions or Enchants more useful.
Can one action train more than one mastery?
Fusing pets can train both Pets Mastery and Fuse Mastery. Most tracks use their own specific activity, so another action will not automatically share the XP.
Should I use an Ultra Mastery XP Potion right away?
Use it when a track has perks you will rely on and its normal grind is slow or unpleasant for you. Keep it for later if that mastery already rises during the play loop you do every day.
Do normal level 99 mastery capes give a boost?
Normal mastery capes are cosmetic. The separate Master Skill Cape is tied to completing the wider mastery system and includes a diamond earn bonus.
