Slime Not Spawning in Swamp How to Fix It (Minecraft Bedrock & Java Edition)

If slimes aren’t spawning in your swamp biome, you’re not alone. Slime spawn conditions in Minecraft Bedrock Edition are very specific, especially in swamps, and many players miss at least one crucial requirement. This guide explains why slimes might not be spawning, how to fix the issue, and also introduces slime chunks as a reliable alternative.

💡 Playing on a hosted server? Use code KB30 to get 30% OFF at GGServers.com!

---

📌 Where Do Slimes Spawn in Minecraft Bedrock?

Slimes can spawn in the following locations:

• Swamp and Mangrove Swamp biomes
• Slime chunks (underground below Y=40)
• Trial Chambers (via trial spawners)
• When an entity dies with the Oozing effect

---

✅ Slime Spawn Conditions in Swamps

Slimes only spawn in very specific conditions in swamp biomes. Missing even one of these can prevent them from appearing.

🔁 1. Moon Phase

• Slimes spawn most during a Full Moon
• No slimes will spawn during a New Moon
• This mechanic is fully functional in Bedrock Edition

🧠 The game uses the moon’s brightness to determine whether slimes can spawn, based on a random calculation.

📏 2. Correct Altitude

• Slimes only spawn between Y=51 and Y=69
• Being outside this range means no spawns, even if everything else is correct

💡 3. Light Level

• The light level must be 7 or less
• This is more forgiving than standard hostile mobs (which require level 0), but still important
• Torches and natural light can prevent spawning if too bright

🧱 4. Spawn Area Must Be Clear

Slimes need a 3×2.1×3 block area with no solid or liquid blocks.

Even things like:

• Trapdoors
• Glass panes
• Buttons
  …can prevent slimes from spawning if inside this space

---

❓ Why Slimes Might Still Not Be Spawning

Here’s a quick checklist:

Condition	Requirement	✅
Y-Level	Between Y=51–69 in swamp
Moon Phase	Not a new moon, ideally full moon
Light Level	7 or lower
Clear Spawn Space	3×2.1×3, completely obstruction-free
Nearby Players	More than 24 blocks away

If you meet all of these, slimes have a 50% chance to spawn on valid blocks.

---

🧭 Slime Chunks in Bedrock Edition

If swamps are unreliable, consider building your farm in a slime chunk.

📌 Slime Chunk Details:

• Slimes spawn below Y=40 in these special chunks
• They ignore light levels and moon phase
• About 1 in 10 chunks is a slime chunk
• In Bedrock, slime chunks are the same in every world (not seed-dependent)

🛠 How to Find a Slime Chunk:

There’s no command to reveal slime chunks in Bedrock, but you can:

• Use external slime chunk finder tools (like Chunk Base)
• Dig below Y=40 and observe where slimes naturally spawn

Once found, dig out a spawn area, light surrounding caves, and watch the slime magic happen.

---

🧪 Bonus: Trial Spawners and Oozing

Starting in Minecraft 1.21, slimes can also spawn via:

• Trial spawners (25% chance the chamber uses slimes)
• The Oozing effect (when a mob dies, two medium slimes spawn)

This is mostly useful for adventurers and less for farming, but it’s a cool feature to explore!

---

📚 Additional Reading

Official Minecraft Wiki page on slimes:
🔗 https://minecraft.wiki/w/Slime

---

🆘 Need Help?

If you’ve checked all slime spawn conditions and still have no luck, switch to a slime chunk-based farm or double-check your setup.

Need expert help with your Bedrock server?
👉 Contact GGServers 24/7 Support Here