Slime RNG Rarity Guide – Common to Secret Slimes Explained
Slime RNG has one of the most satisfying progression systems in Roblox. You roll, you get slimes, and occasionally — if RNG smiles on you — you pull something truly rare. But what do all the rarity tiers actually mean?
This guide breaks down every rarity in Slime RNG, from the Common slimes you'll see a hundred times a day to the Secret slimes that most players never pull.
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Complete Slime RNG Rarity Tiers
| Rarity Tier | Spawn Rate | Trade Value | Example Slimes | Worth Keeping? |
|---|---|---|---|---|
| Common | Very High | Very Low | Basic slimes | ❌ No – reroll |
| Rare | High | Low | Uncommon variants | ⚠️ Only if needed for quests |
| Epic | Medium | Low-Medium | Better stat slimes | ⚠️ Early game only |
| Legendary | Low | Medium | Strong slimes | ✅ Yes – solid income |
| Mythic | Very Low | High | Rare slimes | ✅ Yes – keep |
| Brainrot God | Extremely Low | Very High | Top-tier slimes | ✅ Yes – best non-Secret |
| Secret | Near Impossible | Highest | Rarest slimes | ✅ Yes – ultimate goal |
Common Slimes – The Filler
Common slimes are the most frequent drops. They're useful for building initial coin income but should be rerolled as soon as you get anything better.
Example: Basic green slime, starter variants.
Strategy: Reroll immediately unless you have empty slots.
Rare & Epic Slimes – The Stepping Stones
These slimes are where you start seeing real progress. Rare slimes have better stats than Commons; Epic slimes are even stronger.
Example: Elemental variants, color variants.
Strategy: Keep until you have Legendary or Mythic replacements.
Legendary & Mythic Slimes – The Grind Targets
Legendary slimes are rare enough to get excited about. Mythic slimes are where the game really opens up — they provide significant income boosts and are highly sought after in trading.
Example: Mythic slimes with unique abilities.
Strategy: Keep all Mythic slimes. Legendary slimes are keepers until you have Mythic replacements.
Brainrot God – The Near-Secret
Brainrot God slimes are the highest tier before Secret. They are extremely rare and provide massive income. If you pull one, consider yourself lucky.
Example: High-stat slimes with unique designs.
Strategy: Never reroll. These are endgame slimes.
Secret Slimes – The Ultimate Prize
Secret slimes are the rarest in the game. Most players will never pull one naturally. They offer the highest income and are the most valuable in trades.
Example: Void Slime, other event-exclusive secrets.
Strategy: Keep forever. If you have duplicates, trade them for other Secrets or gamepasses.
How to Increase Your Chances of Rare Slimes
| Upgrade | Effect |
|---|---|
| Lucky Rolls | Higher luck on every roll |
| Double Roll | More rolls = more chances |
| Auto Collect | Never miss a drop |
| Rebirth Multiplier | Each Rebirth gives a luck boost |
The most important gamepass is Lucky Rolls. Without it, your chances of pulling Mythic or Secret slimes are significantly lower.
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Frequently Asked Questions
What is the rarest slime in Slime RNG?
Secret slimes are the rarest. Void Slime is one example.
Can I increase my chances of getting Secret slimes?
Yes – unlock Lucky Rolls and stack Rebirth multipliers.
Should I reroll Mythic slimes?
No. Mythic slimes are keepers. Only reroll duplicates.
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