King Slime

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King Slime
King Slime.pngOld-gen Console, Mobile, 3DS versions
AI TypeKing Slime AI
Damage40 / 64
Max Life2000 / 2800
KB Resist100%
Immune toPoisonedConfusedVenom
Coins 1 Gold Coin
Map Icon King Slime.png
Map Icon

King Slime Trophy.png "The lord of all things slimy." King Slime Trophy.png

The King Slime is a pre-Hardmode boss. He is a very large slime, roughly five times larger than the Rainbow Slime, which is the largest ordinary slime.

King Slime spawns under one of the following conditions:

  • A player uses a Slime Crown.
  • Desktop VersionConsole Version 150 slimes are killed during the Slime Rain event / 75 if King Slime was previously slain.
  • Rarely in the outer sixths of the map, during daytime, and only on grass.

As King Slime takes damage, he spawns additional ordinary Blue Slimes (and in Expert modeDesktop VersionConsole Version, Spiked Slimes) and will also appear to shrink in size. He will always drop one piece of Ninja armor when defeated. When King Slime spawns, the status message "King Slime has awoken!" appears, and then once defeated, "King Slime has been defeated!"

He is immune to the Poisoned, Venom, and Confused debuffs.

Most players consider the King Slime to be the easiest boss in the game, however, with his teleporting ability added in 1.3, this matter is up for debate.

While King Slime is alive, music Boss 1 will play.

Random spawning[edit | edit source]

King Slime has a very rare chance of spawning if the following conditions are met:

  • The player is located in the one of the outer sixths of the map (the far left or far right).
  • Depth is above zero.
  • It is daytime.
  • There must be standard, green grass at its potential spawn point (off-screen; see NPC spawning)

Slime Rain[edit | edit source]

Desktop versionConsole version Desktop/Console-Only Content: This section's information applies only to the Desktop and Console versions of Terraria.
Main article: Slime Rain

If 150 Slimes are killed by players, lava, traps and/or summoned minions during the Slime Rain event, King Slime will spawn. Defeating the boss will end the event shortly after – if all players die, the boss will despawn (except in single player where the boss will teleport itself to the new location of the player at respawn) and the event will continue for some time before ending on its own (between 9-15 in-game hours). If the King Slime has already been defeated on a world, it will only take 75 Slime kills to spawn the King Slime.

Gallery[edit | edit source]

Achievements[edit | edit source]

Achievement Slippery Shinobi.png
Slippery Shinobi • "Defeat King Slime, the lord of all things slimy."
Defeat King Slime for the first time. Desktop VersionConsole Version

Notes[edit | edit source]

  • While a large and resilient enemy, and Boss music plays while fighting him, King Slime is often regarded as a "side-boss" or "mini-boss" (though there is no official word on this from the developers). He differs from traditional bosses in the following ways:
    • King Slime can be encountered regardless of the current level of game advancement.
    • He is the only boss who takes damage from lava.
    • King Slime does not travel or fire through blocks, which creates shielding or trapping possibilities that don't exist when battling most other bosses (though traveling too far from a trapped King Slime can cause him to teleport out).
    • He has certain spawning conditions that are more similar to those of regular enemies than those of bosses.
  • On the Desktop version Desktop version and Console version Console version, if the King Slime's target is unreachable, it will teleport near/on the player. This can be performed from any distance and prevents easily trapping the boss within a small area.
  • King Slime's absolute highest jump can clear a 17-block-high wall.
  • In Expert modeDesktop VersionConsole Version, King Slime summons Spiked Slimes along with normal slimes as he loses health. Note that these are not affected by the Royal Gel.
  • Note that King Slime himself does not drop any gel, but the Blue Slimes he spawns do. This makes King Slime to be a good way to farm gel, for Flamethrower ammo and Asphalt Blocks.
  • King Slime can spawn inside of blocks, making him unable to move unless through teleporting.
  • Despite being considered the easiest boss in the game, it does the second highest damage of any pre-hardmode boss, only beatable by the Wall of Flesh (Skeletron in Expert mode).

Tips[edit | edit source]

For more elaborate strategies on defeating King Slime, including Weapon and Arena recommendations, see Guide:King Slime strategies.

  • Piercing weapons can not only damage King Slime but kill the additional slimes it spawns.
  • The Blue Slimes it spawns drop can drop Hearts and Mana Stars, which respectively restore 20 Health and 100 Mana.
  • Spawning King Slime while in specific areas using Slime Crowns can be a quick, easy way to farm for specific drops, such as Souls, Biome Keys, Pirate Maps, Halloween and Christmas drops or Cascade, Hel-Fire, Amarok, Yelets and Kraken yoyos, due to the high number of Blue Slimes spawned during the fight.
  • An easy way to fight the King Slime is by putting platforms over an area, grapple on to the bottom of the platforms and use a ranged or magic weapon and shoot him with it as he won't fall through platforms.
  • By using a Starfury while King Slime is falling down after jumping, it can take over 50 damage for each time it is hit by the star.

Trivia[edit | edit source]

  • It seems that the source of the Ninja armor is from the ninja inside King Slime.
  • In the Old-gen console version Old-gen console, Mobile version Mobile, and 3DS version3DS versions, it is the only boss to drop a banner.
  • The trophy dropped by King Slime seems to be a Ninjatō covered in slime. The Ninjatō is a common weapon which ninjas are usually shown to carry.
  • The images for the Ninja inside the King Slime and the Crown are stored in separate image files. The King Slime's sprite without them looks similar to an enlargened sprite of a normal Blue Slime.

History[edit | edit source]

  • Desktop
    • A sprite for a Crown added. Without the crown the sprite was King Slime (old).png.
    • New drops added.
    • Now has an Expert mode AI.
    • Now teleports whenever stuck and when not in range of the player for over 5 seconds.
    • Now spawns after the Slime Rain event.
    • Now drops the Solidifier.
  • Desktop 1.0.5:
    • Now floats in liquids and doesn't make a splash sound when hitting water.
    • Only one King Slime may spawn at a time now.