Steal an Egg Cosmic: the Unicorn, all eight eggs and the 700,000,000 Speed gate

The word Cosmic does two jobs in this game. Cosmic is a biome, ninth on the Biomes list. Cosmic is also a rarity tier, which the wiki's pet data lists between Mythic and Secret. The two are unrelated. Of the eight pets in the zone, exactly one has the Cosmic rarity: La Vacca Saturno Saturnita at $2.2M/s. Our table holds 42 pets of Cosmic rarity in total, and the other 41 sit elsewhere, such as Whale Shark and Beluga Whale in Abyss Ocean or Koi in Cherry Blossom.

The names make it worse. Cosmic Gecko is Legendary, Cosmic Gorilla is Mythic, and Cosmic Dragon and Cosmic Skeleton Boss are both Secret. So a Cosmic Dragon is not a Cosmic-rarity pet, and it earns 27 times what the zone's actual Cosmic-rarity pet earns (our arithmetic, $60M ÷ $2.2M). When a guide or a banner says Cosmic, check which it means. The wiki's Laboratory page uses both in one line: "Cosmic Egg" there is the zone's egg group, and the "Cosmic:" entry after it is the tier.

The Cosmic in those names may not be the game's own word either. The Drop Rates page gives internal names for four of them: Galaxy Gecko, Cyclops Gorilla, Cave Dragon and Alien Skeleton Boss. The page calls them internal names and says no more about them.

The Cosmic zone page (rev 2740) lists eight pets, and the infoboxes agree with its cards on every income and reward. The one gap is La Vacca Saturno Saturnita, whose infobox has no reward field; the zone card gives +1.3M Speed and no cash. Spawn values come from the wiki's Drop Rates page, which credits the game files. They add up to 100.0000013, so each "1 in" figure is the zone total divided by the value.

Two oddities are worth noticing. Of the two Secrets, the richer one is also the more common: Cosmic Dragon out-earns Cosmic Skeleton Boss and is listed at exactly 1.5 times its value, 0.743784 against 0.495856. And hatch cash is 100 seconds of base income for all seven pets that list it, from Centapede's $150k on $1.5K/s to the Unicorn's $100b on $1B/s (our arithmetic), so the cash reward barely matters at any tier.

Yes. The Unicorn is a Divine in the Cosmic zone, listed at $1B/s with a 12h grow and a hatch reward of +2.4m Speed and $100b. Its wiki page calls it the "first divine of the game". Two field names in its infobox are misspelt ("Bimo" for biome and "maps" for mps), so its wiki card may not show them, though the numbers are in the page source. The module and the Cosmic zone card both give $1B/s, so the income itself is not in doubt. The wiki lists no purchase price for it; $1B/s is a base income, not a price.

The base rate is only the start, because the Mutations page gives final income as base times mutation times size. The table shows what that makes of one Unicorn. Fractured is not a normal hatch roll. The wiki says a Mutation Consumable applies it to an egg with a 10% chance, Scrambled comes from Dr. Scramble's Shop at the same 10%, and the Rift Event page says a Mutation Shard works on an egg in your pen whether it is growing or fully grown. A 12h grow leaves plenty of time to use one, and on a Unicorn a Fractured success adds $1.75B/s. The wiki also marks the Sakura Incubator route to Bloom and Spirit Bloom as not currently active, and otherwise mentions only random eggs during Admin Abuse, so do not plan on those rows. Any other pet can be run through the same sums at /steal-an-egg-mutation-calculator.

Among the Divines of the twelve Biomes zones the Unicorn has the lowest income, behind Kitsune at $1.8B/s and Nightflame at $3B/s. The full ranking is on /steal-an-egg-divine-pets.

It depends on whether you need money or Speed, and the two answers sit at opposite ends of the table. For money, multiply each pet's income by its share of spawns. That gives the income one random spawn is worth on average, shown in the table. Eternal Lunar Dragon wins at about $778K, ahead of Cosmic Dragon at $446K and the Unicorn at $232K. The Unicorn pays 4 times as much as the Eternal but spawns 13.4 times less often, so the Eternal is the egg to plan around. Take a Unicorn whenever one appears; just do not wait for it while the two dragons go by.

Grow time changes the sum for a while, not for good. Plant a Unicorn and an Eternal Lunar Dragon together. The Eternal hatches 5 hours sooner and banks $4.5T before the Unicorn wakes (18,000 seconds at $250M/s). The Unicorn then gains $750M every second and catches up 1h 40m later, 13h 40m after planting. The same sum for Eternal Lunar Dragon against Cosmic Dragon gives about 8h 16m. If a pet stays in your base longer than that, take the higher income. Both sums assume plain pets earning from the moment of hatching and ignore the 100-second hatch cash.

For Speed, the order flips. Centapede pays 480,000 Speed per grow minute, 144 times the Unicorn's 3,333, and it is the most common egg in the zone. Fresh into Cosmic, with the next gate at 2.5B, Centapede, Cosmic Gecko and Cosmic Gorilla are the eggs to fill pens with, and a Cosmic Dragon or better replaces them as income once it turns up. The per-minute column assumes one egg at a time in one pen. What a spawn roll cannot tell you is how many spawns you will see: the Eggs page says eggs reset every 5 minutes, but no source gives the number of eggs per reset, so none of these figures converts to hours of waiting. A spawn is also not a steal. Bigger eggs slow you down on the way home.

Cosmic's gate is the largest jump on the ladder. Prehistoric asks for 18M; Cosmic asks for 700M, about 39 times as much (our arithmetic on the Biomes figures), when every step after Desert is between 2.8 and 7.2 times. The zone page writes the same figure in full as 700,000,000 Speed, so there is no conflict on the number.

Hatch rewards alone are a slow way across that gap. The 682M between the two gates would take 1,137 Mosasaurus hatches at +600k each, about 6,800 hours on one pen at 6h per egg. Dodo is Prehistoric's fastest Speed egg at +240k for 1m 30s of growing, and even that is 2,842 hatches, or about 71 hours of grow time on one pen before counting the time spent stealing them. The Biomes page names the treadmill as the way to train Speed. The wiki's Treadmill and Trail pages say what those upgrades do, and /steal-an-egg-treadmills and /steal-an-egg-speed carry the detail. The Trail page adds that a Trail boosts treadmill gains only, and gives no Speed away from the treadmill.

Reaching 700M is also not the same as coming home with an egg. The Biomes page warns that bigger eggs need "even more than what is listed", and the Cosmic Skeleton Boss page says it is recommended to have "MORE THAN" 700M speed before trying for that egg. The wiki gives no figure for the margin, so plan for one without expecting a number. The next step is gentler: Cherry Blossom at 2.5B is about 3.6 times Cosmic. Even so, the 1.8B between them equals 1,875 Centapede hatches, or 62.5 hours of grow time on one pen, so the Biomes tip to upgrade your treadmill still applies here.

The guardian is the Cosmic Skeleton Boss, under slightly different labels depending on the page. None of them is wrong, but they do not read alike. The Biomes table (rev 1823) says Cosmic Skeleton. The Cosmic zone page (rev 2740, one of a run of single-editor rewrites) has a "Cosmic Guardian" panel with an image and no name at all. The Cosmic Skeleton Boss page (rev 2767) says in its trivia that "the boss of the Cosmic biome is also the Cosmic Skeleton Boss", and calls it "the Cosmic guardian" further down.

So the guardian and the $45M/s Secret egg share a name, as most guardians on the Biomes list share a name with an egg in their own zone. The page adds three practical notes. A server announcement appears at the top of the screen when that egg spawns, so expect company. You should aim to be first to the nest, and the bat can knock out other players. And the guardian can get far ahead of a player and knock them out from the front, which the page says could be a game bug. The wiki gives no guardian speed, so how fast you must run past it is not documented.

The low end of this zone has a use beyond its income, because two systems ask for these pets by name. The Rift Event page lists Centapede and Cosmic Gecko as Easy, Cosmic Gorilla as Medium and La Vacca Saturno Saturnita as Hard requirements for the Riftbeasts and Shattered Rift banners, in a sacrifice of 3 random pets for 1 Rift Egg. Update 6, though, says the Rift Trade-In Machine has been replaced by Dr. Scramble's Laboratory, and the Rift page still describes the old route, so check the game before you plan on it.

The Laboratory page lists the same four as requirements for the Biohazard and Experimental banners, and Centapede, Cosmic Gecko and Cosmic Gorilla for Unstable DNA, where La Vacca is left out. Update 6 says you now hand in eggs directly instead of hatching them first. That makes a Centapede egg useful twice over in theory: hatch it for 960k Speed, or hand it in. Which pays better is not something the wiki's numbers can settle, since the Laboratory page gives no figure for what one egg returns. The zone's top four eggs are on neither list, so keep those. Details of the Laboratory are on /steal-an-egg-dr-scramble, and the Rift banners on /steal-an-egg-rift-event.