Terraria
The image features the King Slime, a large, blue, gelatinous creature with a crown, positioned at the center. Surrounding the King Slime is a glowing light, emphasizing its size and power. The background showcases the vibrant, pixelated environment from Terraria, with lush greenery, hills, and distant mountains. The overall design highlights the King Slime as a formidable boss in the game, with an aura of mysticism and danger surrounding it.

How To Summon King Slime

This guide explains the different methods to summon King Slime in Terraria, including crafting and using a Slime Crown, triggering the Slime Rain event, and the rare natural spawn method in Expert or Master Mode. Each method is described with the required materials and steps to summon the boss.

December 6, 2024
The image features the King Slime, a large, blue, gelatinous creature with a crown, positioned at the center. Surrounding the King Slime is a glowing light, emphasizing its size and power. The background showcases the vibrant, pixelated environment from Terraria, with lush greenery, hills, and distant mountains. The overall design highlights the King Slime as a formidable boss in the game, with an aura of mysticism and danger surrounding it.

What Is The King Slime

King Slime is a pre-Hardmode boss in Terraria and is a giant blue slime. Known as one of the game's easier bosses, it often serves as an introductory challenge for players. King Slime can summon smaller slimes during combat and teleport to the player if they move too far away.

Notable Drops:

  • Ninja Armor Pieces (Ninja Hood, Shirt, and Pants)
  • Slimy Saddle (summons a rideable slime mount)
  • Solidifier (used for crafting items with gel)
  • King Slime Mask and Trophy
  • Coins and other miscellaneous loot
An image of King Slime, a large blue slime boss from Terraria. It features a crown on top of its head. King Slime's massive size and vibrant color make it stand out against the environment, with its distinctive blue hue and royal crown symbolizing its position as the "king" of slimes.
King Slime

How To The Summon King Slime

Slime Crown Method

To summon King Slime in Terraria, the most reliable method is by using a Slime Crown.

Required Materials:

  • 20 Gel: Dropped by slimes
  • 1 Gold or Platinum Crown (crafted at an Anvil using):
    • 1 Ruby
    • 5 Gold Bars or 5 Platinum Bars

After crafting the Slime Crown at an Anvil, take it to a Demon or Crimson Altar to complete the process. These altars are naturally occurring crafting stations found in the Corruption or Crimson biomes. Demon Altars appear in worlds with Corruption, while Crimson Altars are present in Crimson worlds. They are indestructible until Hardmode and are often found underground or inside chasms. Once the Slime Crown is finalized at the altar, you can use it during daylight in any biome to summon King Slime.

Crimson Altar and demon altar from terraria. The crimson altar is red with eyes poking out of it, while the demon altar is darkish grey with horns out of it
Crimson and Demon Altar

Slime Rain Event Method

Alternatively, King Slime can appear during the Slime Rain event, a random daytime occurrence. During this event, slimes spawn at an increased rate. Defeating 75 slimes in Expert Mode or 150 in Normal Mode during the event triggers King Slime's appearance. Slime Rain ends either with King Slime's defeat or when the day transitions to night.

Natural Spawn Method

King Slime can naturally spawn in Expert or Master Mode when the player is in one of the outer lateral sixths of the map (far left or far right), at a depth above zero, and during the daytime. The spawn point must also have standard green grass. This event has a low 1% chance of occurring and is less reliable than using the Slime Crown or triggering the Slime Rain event.

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