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Mutations, Sizes & Luck

Rainbow x20 explained · INFINITE size · Gold variants · hunting odds and luck windows

The Variant System In One Paragraph

Every catch in Throw Food For Animals can come with modifiers: mutations (Rainbow being the headline act), size variants (up to INFINITE), and Gold coloring. Modifiers stack multiplicatively with each other, and they change an animal's income permanently — a Rainbow INFINITE catch earns its base times twenty times at least seven more. Because only ten animals occupy earning slots, mutated animals effectively add roster depth without adding zones: the Savanna Crocodile you caught in hour one can still be out-earning fresh Mythical Paradise catches hundreds of hours later if the rolls went right.

Rainbow: The 1-in-200 Jackpot

The Rainbow mutation multiplies income by 20, with community-tracked odds around 1 in 200 catches. Two official data points bracket how far luck scales: the Rainbow Egg's marketing art advertises a rainbow gorilla at 1 in 999B odds — which tells you the game's luck mechanics are built for astronomical tails — while the practical 1-in-200 baseline means an active hunter sees Rainbows regularly. The correct response to catching one is simple: swap it into a slot, re-benchmark your ten best, and then decide what's sellable. A 20x multiplier on a mid-tier animal frequently beats the plain top-tier animal it just displaced.

Sizes, Gold, And Reading The Screen

Size variants run from small through Giant up to INFINITE, with community testing pegging INFINITE at a minimum 7x income multiplier. Gold variants add another income bump. None of this requires external tools to evaluate: the game displays each animal's adjusted income on the catch screen and in the Animals menu. The habit worth building is comparing numbers, not names — two identical animals can earn differently if one rolled a variant, and the Equip Best button sorts by actual income, not species prestige. Trust the sort.

Luck: How To Actually Hunt Rare Rolls

Luck raises the odds of rare outcomes — mutated catches and high-rank spawns alike. Three tools exist. Server Luck boosts (19-159 Robux for 2x-16x, 15 minutes) raise luck for the whole server, which means busy servers get free boosts whenever anyone buys; free-to-play hunters should simply play crowded and watch for luck announcements in the server feed. Super Lucky Throws (39-499 Robux packs) are storable 100x-luck throws you can fire exactly when and where you want — best saved for new-map releases when rosters are fresh. And the Rainbow Egg skips the odds entirely for one guaranteed Rainbow Giant animal, the deterministic choice for players who'd rather buy the outcome than hunt it.

The optimal hunt recipe, combining every system on this page: wait for (or buy) a shared 16x Server Luck window, load your best food, throw into the back third of the deepest zone your Throw Power consistently reaches, and use stored Super Lucky Throws first. That stack — luck window, max depth, 100x throws — is where every rare screen-filling catch in this game happens. Everything else on the farm is economy: slots, food tiers and training, all covered in the beginner guide and training page.

What We Don't Know (And Won't Invent)

Honest gaps in public data: exact per-variant multipliers beyond the two headline numbers (Rainbow x20, INFINITE ≥7x) aren't published; Gold's exact multiplier isn't documented; and luck's precise formula is opaque. Community trackers continue updating — this page gets revised as data lands. The numbers we do publish come from cross-checked tier databases (148 tracked animals across 17 areas at last update), and where sources disagree, the disagreement stays visible instead of being papered over with a confident-looking guess.

FAQ

What is the Rainbow mutation in Throw Food For Animals?
Rainbow is an official mutation that multiplies an animal's income by 20. Community odds tracking puts a Rainbow roll at roughly 1 in 200 catches. The game's own Rainbow Egg art advertises even more extreme odds for special cases — a rainbow gorilla at '1 in 999B' — showing the scale luck mechanics reach in the late game.
How do size variants work?
Animals can hatch or spawn with size variants that multiply income, stacking on top of mutations. Community testing reports INFINITE size as at least a 7x multiplier. The practical consequence: a mutated mid-zone animal can out-earn a plain animal from a much deeper zone, which is why you check the income number on screen rather than judging by species name.
What are Gold animals?
Gold is another income-modifying variant documented by community trackers — a Gold catch earns more than its plain version. Like size, it stacks with mutations. All variants are displayed on the animal itself with the adjusted income, so the game tells you what you caught; no external calculator needed.
How do I increase my chances of rare mutations?
Luck raises mutation odds. Server Luck boosts (2x up to 16x for 15 minutes) are the main tool — and because they're server-wide, you get them free whenever another player buys one, so play in busy servers. Super Lucky Throws (100x luck, storable) are the heavy-duty option for targeted hunts. Hunt during luck windows, in the back third of the zone whose top ranks you want.
Should I sell a low-tier animal with a great mutation?
Usually no. A Rainbow (x20) or INFINITE-size catch from an early zone can out-earn a plain S-tier animal, and it keeps earning that multiplier forever. The sell-first rule (clear anything below your ten best) has this one standing exception: check the mutation and size tags before selling anything.
What is the Rainbow Egg?
A shop egg that guarantees an animal with the Rainbow mutation and Giant size. It's the deterministic way to get the game's best multipliers without grinding luck rolls — the trade-off is Robux cost versus the free 1-in-200 hunt. For players buying it late-game, a Rainbow Giant version of a top-zone animal is among the biggest income jumps purchasable.
Do mutations apply to shop and egg animals too?
The percentage-based shop animals (Pumpkin Monster, egg rolls) don't roll standard mutations — their value is the multiplier itself. Mutation rolls apply to catches. That's part of why a mutated Waste Harvester is the true endgame trophy: it combines the game's highest catchable base income with multiplicative rolls on top, which no shop item replicates.
What's the best way to hunt a Rainbow right now?
Stack everything: wait for a shared 16x Server Luck window in a busy server, go to the deepest zone your Throw Power consistently reaches, throw into its back third with your best food, and fire stored Super Lucky Throws first. Even stacked, Rainbow odds are lottery-shaped — the practical approach is hunting while farming, so misses still pay.

Data checked November 8, 2026. Throw Food For Animals updates often — we re-verify numbers after each update.