If you're trying to figure out how pet rarities work in Roblox Pet Simulator 170 especially why some pets feel much harder to get than others you’re likely bumping into the rarity scaling mechanics. It’s not just about “rare” vs. “legendary.” The game adjusts drop chances, evolution requirements, and fusion outcomes based on a hidden rarity value tied to each pet. That value changes how often it appears from eggs, how many stars it needs to evolve, and even how likely it is to succeed in fusion. Understanding this helps you plan better instead of relying on luck alone.

What does “rarity scaling” actually mean in Pet Simulator 170?

Rarity scaling means that each pet has an internal rarity number (not just its displayed rarity label like “Epic” or “Mythic”). This number affects multiple systems: egg drop rates, evolution star thresholds, and fusion success odds. For example, two pets both labeled “Mythic” might have different internal values one at 170, another at 185 so their actual availability and upgrade paths differ. This is why some Mythic pets show up more often in the egg drop rate analysis, while others rarely appear without boosted luck.

When do players actually use rarity scaling info?

You’ll use this knowledge when deciding where to spend luck boosts, which pets to prioritize for evolution, or whether a fusion attempt is worth the resources. Say you’re aiming for a specific pet like “Void Serpent.” Its rarity scaling value tells you it needs more stars to evolve than “Celestial Fox,” even though both are Mythic. That means checking the evolution path breakdown saves time and avoids wasting fusion materials on pets with steeper scaling curves.

How does rarity scaling affect fusion success?

Higher rarity scaling lowers base fusion success chance, regardless of pet level or star count. A pet with a scaling value of 170 has a lower default success rate than one at 140 even if both are at 10 stars. You can offset this with luck boosts or fusion stones, but the underlying scaling sets the baseline. That’s why some players report repeated failures fusing certain high-scaling pets, even with perfect stats. The fusion success probability guide breaks down how much each point of scaling reduces your odds.

Common mistakes people make with rarity scaling

  • Assuming all pets in the same rarity tier (e.g., “Legendary”) behave the same some Legendary pets scale at 165, others at 182, leading to very different drop and evolution behavior.
  • Using luck boosts only on eggs without adjusting for scaling boosts help, but they don’t erase the gap between a 150-scaling pet and a 170-scaling one.
  • Fusing low-star pets hoping to “get lucky” scaling makes early fusion attempts especially unreliable for high-value pets.

Practical tips for working with rarity scaling

Check community-updated rarity lists not just official labels to see actual scaling numbers. Use those numbers to compare pets before investing in evolution paths or fusion attempts. If you’re farming a pet with known high scaling (like anything above 165), focus on stacking luck modifiers before opening eggs, and wait until your fusion pet hits at least 8–9 stars before attempting high-risk fusions. Also, cross-reference with the egg drop rate analysis to confirm whether a pet’s scarcity comes from scaling or just low base spawn weight.

For the most accurate current data, developers sometimes share scaling notes in official Discord announcements though these aren’t always public. One reliable third-party reference used by active players is the Roblox Pet Simulator Fandom page on rarity scaling, which tracks verified values across updates.

Next step: Pick one pet you’re currently trying to obtain or evolve. Look up its rarity scaling value (check recent community spreadsheets or the Fandom page), then compare it to the egg drop rates and evolution star requirements. That tells you whether you should adjust your luck usage, wait for more stars, or shift focus to a pet with friendlier scaling.