S Tier

Storm Peaks / OceanEnd-gameStorm Peaks / Ocean biome unlocks Mythic + Legendary egg pools. Hard gate at Speed 100. Community reports fastest milestone at 20, noob-to-pro variant reports 75+.

A Tier

Snow BiomeTier 3Snow biome unlocks Epic + Mythic eggs. Hard gate at Speed 120. Attempting at base Tier 3 means guards deal double damage.

B Tier

Desert BiomeTier 2Desert biome unlocks Rare + Epic eggs. Hard gate at Speed 50. Community-reported milestone range: 10–25.

D Tier

First Biome (Meadow Ridge)StarterStarting zone. No Speed requirement. Common + Uncommon eggs.