How do you get Rainbow Slime in Palworld?

What actually happens

Put Green Slime and Rainbow Slime (one male, one female) in a Breeding Farm with a Cake in the feed box. The egg they produce hatches into Rainbow Slime.

Rainbow Slime is a Neutral element Pal whose best work suitabilities are Transporting Lv1. It has 105 HP, 95 Attack and 105 Defence at base, and appears in the wild between level 42 and 44.

Every parent pair that produces Rainbow Slime

There are 17 combinations in the verified 1.0 breeding table. These are the most practical:

The full list of all 17 pairs is on the Rainbow Slime Pal page, and you can search any pair yourself with the breeding calculator.

How breeding actually works

Palworld's 1.0 breeding uses a combi-rank system. Each Pal has a hidden rank, and an ordinary pair produces the species whose rank is closest to floor((rankA + rankB + 1) / 2). On top of that sit roughly 150 unique recipes that override the maths entirely — those are the ones that create variants and legendaries.

Rainbow Slime has 17 unique recipes, which means the result is guaranteed rather than rank-based.

The step-by-step process:

1. Build a Breeding Farm from the technology tree.
2. Place a male and a female Pal inside — gender matters, species order does not.
3. Keep Cake in the feed box. Without it, no egg is produced.
4. Collect the egg and put it in an Egg Incubator.
5. Adjust the incubator temperature with a Heater or Cooler to hatch faster.

Full detail, including Cake ingredients and passive-skill inheritance, is in our breeding guide and egg incubation guide.

Catching Rainbow Slime instead

Breeding is usually faster than hunting, but a wild capture gives you a Pal immediately and counts toward Paldex capture bonuses. Wild Rainbow Slime appear between level 42 and 44. Lower its health, apply a status effect or attack from behind for the capture bonus, then throw the best sphere you can craft.

Capturing ten of the same species grants a permanent Paldex capture bonus for it, which is a strong reason to keep catching duplicates rather than fleeing once you have one.

Passive skills worth breeding for

Children can inherit passives from either parent, so the real goal is rarely just the species — it is the species with the right traits:

• Combat: Legend, Musclehead, Ferocious, Burly Body
• Work Pals: Artisan, Serious, Lucky, Work Slave
• Mounts: Runner, Nimble, Swift

Breed the child back with a well-rolled partner and repeat. The legendary breeding guide walks through a full four-passive chain.

Related tools

• Breeding calculator — check any pair instantly
• Combinations browser — work backwards from a target
• Breeding path finder — a route from the Pals you already own
• Rainbow Slime Pal page — full stats, skills and drops