Almost every pet in Pickaxe Simulator comes from eggs. A simple Pet System Guide rule is to focus on the egg tier that matches your current world – Spawn has Common/Rare/Forest eggs, Moon has Black Hole/UFO/Garden, Frostlands has Sand/Snow/Lava, Ashlands has Sunny/Cave/Sakura, Desert has Beach/Aqua, and Stud has Pixel/Farm. Don't go back to weaker eggs just because they are cheaper.
- Early game: Starter eggs are fine, but replace early pets quickly once you unlock stronger worlds and zones.
- Mid game: save up coins for higher‑tier eggs in new worlds instead of over‑hatching low‑tier eggs in World 1.
- Late game: focus on the newest world's eggs, where Mythical and high Legendary pets usually live.
The short version of this Pet System Guide is: always invest into a small core of your strongest pets instead of spreading resources across everything you own. A few high‑rarity, well‑leveled pets will outperform a full team of underleveled commons. Remember that every pet can be upgraded into Golden or Rainbow (each tier doubles the base stats), and some hatch directly at those tiers, so prioritize pets that you can push through those breakpoints quickly.
- Always equip your highest rarity, highest stat pets even if their base level is slightly lower.
- Keep a "main team" of 3–4 pets and feed almost all upgrade resources into them.
- Use weaker pets only as temporary fillers or to fuse into better ones; after promotion to Golden or Rainbow they should either stay in your team or become crafting fodder.
Higher‑rarity pets usually come with stronger multipliers for Power, coins or special effects. Even if a common pet drops at a slightly higher base level, a Legendary or Mythical pet will quickly overtake it once you feed it a few upgrades. Later on you can also craft pets into Large → Huge → Giga → Titan forms for even higher multipliers, so don't be afraid to hold duplicates of your best mythical lines.
- Don't over‑level common pets; switch to Rare/Epic/Legendary as soon as you pull them from new eggs.
- Track which pets give pure Power versus mixed bonuses so you can build around your playstyle.
- If a pet has a unique effect (extra luck, move speed, etc.), keep one copy even if its raw Power is slightly lower.
To keep your Pet System progression smooth, combine farming, egg hatching and team upgrades into a simple loop you can repeat every session.
- Farm coins in the highest zone you can clear comfortably without potions.
- Spend a batch of coins on the current world's best egg instead of buying eggs one by one.
- Lock or favorite your best pets so you don't accidentally delete or fuse them.
- Whenever you unlock a new world, test its eggs immediately and update your main team if upgrades drop; the Stud Pixel/Farm duo is a massive spike before Ashlands, and Ashlands' Sakura egg often delivers the first Mythical pets worth turning into Large/Huge versions.