Mutations apply to individual animals and stack multiplicatively with every other multiplier in the game. Plan your mutation reroll budget after you have an Emerald-ready slot.
Gold is the entry mutation at ×2 cash. Cheap and frequent; treat it as a placeholder while rerolling for Emerald.
Emerald is the apex mutation at ×10 cash. Stacks with x2 Money (×2) and Friends bonus (×2) for a 40× cash layer before treadmill and rebirth multipliers.
Keep entries useful by separating source-backed facts, player-tested strategy, and update timing.
Keep rarity, obtain method, abilities, and summary tied to official posts or repeatable in-game testing.
Link mutations entries to matching builds, boss routes, and guide sections.
Keep tier values and obtain methods current after each game update.