Blue Slime
The humblest gelatinous guardian of the forest floor
The Blue Slime is a pre-Hardmode enemy and a slime variant that commonly spawns in Forest biomes during the daytime , as well at any time in the Underground layer. Blue Slimes only target the player when damaged, during the night, or at any time when underground. Like most other slimes, the Blue Slime will be passive towards any player with the Royal Gel (Desktop, Console and Mobile versions) accessory equipped. On Desktop , Console , Mobile , and 3DS , they can rarely be found carrying bonus drops , which the player receives upon the slime's death. - Item (Quantity) Rate - Gel (1–2) 100% - Slime Staff 0.01% 0.014% - Bonus drop: can be seen in the slime's body Only one of these can be dropped - Swiftness Potion 0.18% - Ironskin Potion 0.18% - Spelunker Potion 0.18% - Mining Potion (Desktop, Console, Old-gen console and Mobile versions) 0.18% - Recall Potion 0.27% - Wormhole Potion (Desktop, Console and Mobile versions) 0.27% - Torch (5–10) 0.31% - Bomb (2–6) 0.31% - Rope (20–45) 0.31% - Heart 0.31% - Copper Ore (3–13) 0.16% - Tin Ore (3–13) 0.16% - Iron Ore (3–13) 0.16% - Lead Ore (3–13) 0.16% - Tungsten Ore (3–13) 0.16% - Silver Ore (3–13) 0.16% - Gold Ore (3–13) 0.16% - Platinum Ore (3–13) 0.16% - Copper Coin (50–99) 0.42% - Silver Coin (20–99) 0.42% - Gold Coin (1–2) 0.42% - Internal NPC ID : 1 - 1 Notes - 2 Achievements - 3 Trivia - 4 History
- Type
- Slime
- Environment
- Forest + Day Underground Slime Rain
- AI Type
- Slime AI
- Damage
- 7 / 14 › 62 › 74 / 21 › 93 › 111
- Max Life
- 25 / 50 › 274 › 330 / 75 › 411 › 495
- Defense
- 2 / 2 › 10 › 12
- KB Resist
- 0% / 10% / 20%
- Banner
- Blue Slime Banner (Desktop, Console and Mobile versions)
Lore & Background
In the verdant tapestry of Terraria's surface world, few creatures embody the duality of innocence and danger quite like the Blue Slime. By day, these azure orbs drift lazily through the Forest, their translucent bodies catching the sunlight with a gentle, almost hypnotic shimmer. They are the silent sentinels of the overworld, passive wanderers that only recoil into aggression when provoked or when the sun dips below the horizon. Yet, beneath the soil, in the crushing darkness of the Underground layer, they shed their docile nature entirely, becoming relentless hunters that strike without hesitation at any intruder.
Even in their simplicity lies a profound mystery. Some scholars whisper that these creatures are the primordial ancestors of all slime-kind, their very existence predating the complex ecosystems above. The Bestiary notes their insatiable hunger, capable of swallowing anything whole only to take an eternity to digest it. While most view them as mere obstacles, those who wear the Royal Gel find a strange kinship; these slimes bow in peace, recognizing a sovereign presence rather than a threat. From the rare glint of a Slime Staff hidden within their gelatinous form to the sudden drop of precious ores, they offer rewards that hint at a deeper, forgotten purpose in the world's genesis.
In Their Own Story
The morning sun filters through the canopy, dappling the grass as you step into the clearing. There, bobbing gently against the breeze, is a Blue Slime. It looks less like a monster and more like a piece of the sky that has detached to rest on the earth. You raise your sword, but it does not flinch; it simply watches with its single, unblinking eye, waiting for a reason to fear you. Then, the wind shifts, or perhaps you take one step too close, and the atmosphere changes instantly. The slime's gelatinous form tenses, and it launches itself toward you with surprising velocity.
You parry the impact, feeling the cool, wet resistance of its body against your blade. It bounces back, undeterred, a small blue comet returning for another strike. In this moment, the encounter feels less like combat and more like a ritual. You notice a faint shimmer within its core—a bonus drop waiting to be released. With a final, decisive swing, you cleave through it. The slime dissolves into a harmless puddle of gel, leaving behind a glinting coin or perhaps a rare potion that hints at the treasures hidden in even the most mundane of foes.
Reader's Guide
Blue Slimes are the quintessential pre-Hardmode enemy, spawning frequently in Forest biomes during daylight hours. However, their behavior shifts with the environment: they remain passive by day on the surface but become aggressive if damaged or when night falls. In the Underground layer, regardless of time, they will attack any player immediately. This makes them a constant threat for early-game explorers delving too deep without proper armor.
Fighting them is straightforward due to their low defense and lack of knockback resistance in normal mode, but farming requires patience or specific conditions. They can be summoned via Slime Statues, though these statue-spawned variants do not drop special items like Presents. For loot hunting, remember that only naturally spawned slimes on Desktop, Console, and Mobile versions carry the rare bonus drops.
The primary reward is Gel, essential for crafting torches and campfires. However, the true prize is the Slime Staff, dropped at a mere 0.01% to 0.014% chance, making this enemy one of the most tedious yet sought-after farms in the game. Occasionally, they also drop rare potions like Swiftness or Ironskin, and standard ores ranging from Copper to Platinum, providing a modest early-game income.
Did You Know?
- The Blue Slime holds NPC ID 1, indicating it was the first enemy added to the game.
- During Windy Days, they can spawn attached to Windy Balloons, floating above the ground.
- They cannot naturally spawn within 200 tiles of the world's center unless in Expert Mode.
- In Core Keeper, a crossover variant known as the Royal Slime is summoned by King Slime.