Want to hit the jackpot? Check out my Slime RNG Rarest Slime guide, telling you the absolute rarest roll to perform, including figures, as well as how to maximise your luck to make a go of trying to unveil the absolute peak of this simple, slimy game.
Whether you’re interested in statistics or want to know if you’re entitled to bragging rights, stick around and let’s get into it.
Slime RNG Rarest Slimes
This Rarest index is up to date as of May 7th, 2026.
The Rarest Of Them All
The true rarest Slime to roll in Slime RNG is the Inverted Shiny Huge Frosty, coming in at a 1 in 668.75 Qn (Quintillion).
But let’s take a step back and explain how the Slime Index works.
Slimes have different variants, which you can roll, including Base, Big, Huge, Shiny, and Inverted. All Slimes included in the base index have alts of themselves for the other variants. This means it’s pretty easy to know which Slime is the rarest based on which Slime is the rarest in the base index.
Some of the variants can overlap, which is how we determine the true rarest. The only two categories that don’t appear together are Big and Huge, because they both influence size.
How To Increase Luck
I have a guide on how to get Max Luck in Slime RNG, but in short:
Index Completion
At intervals during your Index completion, you’ll gain permanent percentile Luck buffs.
Like and Group Rewards
Joining the Roblox Group and liking the game via Roblox applies a small Luck buff.
Upgrades
The Upgrade Skill Tree has sections dedicated to enhancing your Luck.
Rebirths
Rebirthing is the BEST way to get luck. Each rebirth applies a multiplier, essentially doubling your luck each time.
Rolling
Rolling has the chance to apply luck if you strike the x2, x4, x8, x16, etc clovers.
Zone Luck
Each new Zone you unlock applies a +1 Luck boost.
Friend Boosts
For each friend online in your server, you will both gain luck benefits.
Potions
Consuming potions increases your luck temporarily.
Server Luck
During Admin Abuse events, all servers globally will gain insane Luck multipliers.
Gamepasses
If you have Robux to spare, you could invest in the VIP or Lucky Rolls Gamepasses.
Frequently Asked Questions
I’m not rolling anything other than Base Slimes even though I have good luck. What can I do?
Make sure you’ve unlocked the other slime variants via the Upgrades Skill Tree. Each Upgrade costs coins and is found on the Slime Slot Upgrade branch.
How do I get on the leaderboard?
At the Grasslands area (Zone 1), there are four leaderboards for different elements of the game, showing you the players who truly stand out. These categories include Most Rebirths, Most Rolls, Best Roll (OAT), and Best Daily Roll.
Start Playing Slime RNG
Now you know which is the rarest slime, and how to increase your luck to roll it! Start playing Slime RNG via Roblox.
Or, for more on this, check out my Slime RNG Recipe Locations guide, or our Slime RNG Rebirths guide.
The post Slime RNG Rarest Slimes: Base, Big, Huge, Shiny, and Inverted! appeared first on Gamezebo.
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