Magma Cube

The Magma Cube is the Nether’s answer to the Slime — and like most things the Nether touches, it took a perfectly bouncy concept and set it on fire. These hostile, flame-cored cubes bounce around the Nether’s deadliest biomes looking to body-slam anything with a pulse. Kill one, and it splits into smaller versions of itself, each one just as angry and just as intent on squishing you flat.

Think of them as flaming Russian nesting dolls that want you dead. A large Magma Cube splits into 2-4 medium ones, each medium splits into 2-4 small ones, and every single one of those tiny bouncing fireballs can still hurt you. What starts as one mob quickly becomes a dozen, and if you are not careful, you will find yourself surrounded by a swarm of molten cubes in a dimension that already has enough ways to kill you.

They are immune to fire and lava — because of course they are — which makes fighting them near lava lakes a special kind of frustrating. Your knockback sends them nowhere dangerous, but one good hit from them near a ledge can send you into the lava instead. The Nether giveth, and the Nether absolutely taketh away.

Overview / Quick Stats

Appearance

Magma Cubes look like dark red-brown cubes with a glowing orange-yellow core visible between their segmented outer layers. Imagine a cube made of cooled magma crust with molten lava peeking through the cracks — that is exactly the vibe Mojang was going for, and it works.

When a Magma Cube jumps, its body stretches vertically and compresses on landing, revealing more of that glowing inner core. The segments separate slightly in midair, giving you a clear look at the fiery center before the cube slams back together. It is one of the more satisfying animations in the game, assuming you are watching from a safe distance.

Size matters here — large Magma Cubes are about two blocks tall and genuinely imposing when they are bouncing toward you in a Basalt Delta. Medium ones are roughly one block, and small ones are half a block and easy to overlook until they are nibbling at your ankles. All three sizes share the same dark exterior with glowing core texture, just scaled down.

Unlike Slimes, Magma Cubes are completely opaque. You cannot see through them. Their eyes are dark, recessed into the top segments, and significantly harder to spot than the goofy wide eyes on a Slime. Magma Cubes look like they mean business because they do.

Behavior & AI

• Targeting: Magma Cubes target players within 16 blocks and hop directly toward them. They do not need line of sight to begin pursuing you — if you are in range, they are already bouncing your way.
• Movement Pattern: Like Slimes, Magma Cubes move exclusively by jumping. They cannot walk or strafe. Every 2-6 seconds (40-120 ticks) they will jump again, adjusting their facing direction toward the nearest player before launching. Larger cubes jump farther and higher.
• Idle Behavior: When no player is within range, Magma Cubes still jump randomly in place. They never truly stand still — if it is a Magma Cube, it is bouncing. This also means they can accidentally hop off ledges and into lava pools with zero hesitation.
• Pathfinding: Their pathfinding is basic — they jump in the direction of the player, but they do not navigate around obstacles intelligently. They will happily slam into walls and keep jumping. Ledges, pits, and lava are not obstacles to them; they jump over or straight into them without caring.
• Fire & Lava Immunity: Magma Cubes are completely immune to fire and lava damage. They swim in lava the same way other mobs walk on land. This makes Nether lava lakes a playground for them and a nightmare for you.
• Fall Damage Immunity: Magma Cubes take zero fall damage regardless of height. They can bounce off a cliff into a cavern 50 blocks below and keep going like nothing happened.
• Despawning: Standard hostile mob despawn rules apply. Magma Cubes will despawn if no player is within 128 blocks, and they can randomly despawn if no player is within 32 blocks.
• Splitting: When a large or medium Magma Cube is killed, it splits into 2-4 smaller Magma Cubes of the next size down. Small Magma Cubes do not split further — they just die. Each spawned cube inherits the parent’s aggro state.
• Water Interaction: Magma Cubes are not damaged by water but will avoid it when possible. In Bedrock Edition, they can survive and bounce in water normally.

Abilities, Attacks & Status Effects

• Attack Method: Magma Cubes damage players by jumping into them — their body is the weapon. Contact with any size Magma Cube during a jump deals damage based on the cube’s size.
• Attack Range: Determined by the cube’s hitbox. Large Magma Cubes have a 2.04-block wide hitbox, which means they can tag you from surprisingly far away when mid-jump.
• Damage Scaling: Large cubes deal 6 damage (3 hearts), medium deal 4 damage (2 hearts), and small deal 3 damage (1.5 hearts). In Java Edition, small Magma Cubes cannot deal damage to players at all, but they still have a hostile AI and will try.
• Natural Armor: This is the key difference between Magma Cubes and Slimes. Magma Cubes have natural armor that scales with size — 12 armor for large, 6 for medium, 3 for small. That armor reduces incoming damage significantly, making large Magma Cubes much tankier than their Slime cousins.
• Fire Immunity: Immune to fire, lava, Fire Aspect, and Flame enchantments. Do not waste a Fire Aspect sword on these things — you are literally bringing fire to a fire fight.
• Fall Damage Immunity: Completely immune to fall damage of any height.
• Shield Interaction: Shields can block Magma Cube attacks. Blocking prevents the contact damage but does not prevent knockback.
• Status Effect Immunities: None beyond fire immunity. They can be poisoned, slowed, and afflicted with anything else you throw at them.

Variants, Jockeys & Special Forms

Size Variants

Magma Cubes come in three sizes, and technically any size value from 1 to 127 can be assigned via commands. In natural gameplay, you will only encounter large (size 4), medium (size 2), and small (size 1).

• Large (Size 4): The default spawn size. 16 health, 12 armor, 6 attack damage. Splits into 2-4 medium Magma Cubes on death.
• Medium (Size 2): Spawned from splitting large cubes. 4 health, 6 armor, 4 attack damage. Splits into 2-4 small Magma Cubes on death.
• Small (Size 1): The final form. 1 health, 3 armor, 3 attack damage (Bedrock) or 0 attack damage (Java). Does not split — drops loot and XP on death.

Magma Cube Jockey (Bedrock Edition Only)

• Spawning: In Bedrock Edition, a small Magma Cube has a rare chance to spawn riding a Strider. This creates a Magma Cube Jockey — a hostile mob riding a passive mob through lava lakes.
• Behavior: The Strider moves normally while the Magma Cube rides. If the Magma Cube is killed, the Strider continues on its own. If the Strider is killed, the Magma Cube dismounts and continues attacking.
• Rarity: Uncommon. You can go many hours in the Nether without ever seeing one.

Spawning

The Basalt Deltas are where Magma Cubes truly dominate. With a spawn weight of 100, they make up the overwhelming majority of mob spawns in that biome. If you are walking through a Basalt Delta and not seeing Magma Cubes, check your render distance — they are there, and they are everywhere.

Interactions with Environment & Other Mobs

• Lava Interaction: Magma Cubes float in and hop through lava without taking any damage. They treat lava as just another surface to bounce on. This makes them a persistent threat near lava lakes since they can chase you across terrain you cannot follow.
• Iron Golems: Iron Golems will target and attack Magma Cubes, and Magma Cubes will attack Iron Golems in return. This interaction is rare in practice since Iron Golems do not naturally spawn in the Nether.
• Magma Blocks: Despite the name, Magma Cubes have no special interaction with Magma Blocks. They do not heal on them, spawn more frequently on them, or behave differently around them. The name is purely cosmetic.
• Boats & Minecarts: Magma Cubes can ride in boats and minecarts. A Magma Cube in a boat is effectively trapped since it can only move by jumping, but it will still deal contact damage if you get too close.
• Striders: In Bedrock Edition, small Magma Cubes can spawn riding Striders, creating Magma Cube Jockeys. They ride across lava lakes on their unwilling mount.
• Wither: The Wither does not target Magma Cubes, as they are undead-adjacent in the game’s classification. However, Magma Cubes are not actually classified as undead — they are just ignored by the Wither’s targeting AI in practice.

Drops & Loot

Magma Cream is the main reason anyone farms these things. It is a crafting ingredient for Fire Resistance Potions and Magma Blocks. You can also craft Magma Cream directly from Blaze Powder and a Slimeball, but if you are already in the Nether killing Magma Cubes, you might as well collect the free stuff.

Player Uses & Farming

• Magma Cream Uses: The primary drop from Magma Cubes. Used to brew Fire Resistance Potions (Awkward Potion + Magma Cream) and craft Magma Blocks (4 Magma Cream = 1 Magma Block). Fire Resistance Potions are essential for Nether exploration, Blaze farming, and the Ender Dragon fight if you fall in fire.
• XP Farming: Because each large Magma Cube can yield up to 28 XP through splitting, they are a surprisingly efficient XP source. A single large cube killed through all its splits gives more XP than most individual mobs in the game.
• Basalt Delta Farms: The Basalt Deltas biome has an absurdly high Magma Cube spawn weight. Building a mob farm in a Basalt Delta is one of the most efficient ways to collect Magma Cream and XP in the game. The basic design involves creating spawning platforms with a flushing or killing mechanism below.
• Farm Design Principles: Magma Cubes can jump, so farms need walls at least 4 blocks high to contain the large variants. Use magma blocks or campfires for damage-based killing floors, or trident killers for player-kill XP. Wither roses work as a killing mechanism since Magma Cubes are not immune to Wither damage. Water cannot be used in the Nether, so alternative flushing methods like entity cramming or fall damage are needed.
• Expected Rates: A well-designed Basalt Delta Magma Cube farm can produce several hundred Magma Cream per hour and substantial XP. Rates depend heavily on spawning platform count and AFK distance.
• Edition Caveats: Mob spawning mechanics differ between Java and Bedrock. Java Edition uses a mob cap system that makes spawn-proofing surrounding areas critical for farm efficiency. Bedrock Edition has different despawn behavior, which can affect farm designs.

Commands & NBT

Here are some useful commands for summoning Magma Cubes with specific properties:

/summon minecraft:magma_cube ~ ~ ~ {Size:3}

Summons a size 4 Magma Cube (Size tag is zero-indexed, so Size:3 = in-game size 4, the large variant).

/summon minecraft:magma_cube ~ ~ ~ {Size:0}

Summons a tiny size 1 Magma Cube — the smallest natural variant.

/summon minecraft:magma_cube ~ ~ ~ {Size:10}

Summons a massive Magma Cube far larger than anything that spawns naturally. Size values up to 127 are technically valid, but anything above 10 starts causing performance issues and visual absurdity.

/summon minecraft:magma_cube ~ ~ ~ {Size:3,NoAI:1b}

Summons a large Magma Cube with no AI — it will sit in place and not jump, attack, or pursue. Useful for builds, displays, or testing.

• Size: Integer value (0-126) that determines the cube’s size. The in-game size displayed is Size + 1. Naturally spawning cubes use Size values of 0, 1, and 3.
• wasOnGround: Boolean that tracks whether the Magma Cube was last on the ground. Used internally by jump AI logic.

Tags, Gamerules & Datapack Hooks

• Entity Type Tag: #minecraft:can_breathe_under_water — Magma Cubes are included in this tag despite not breathing in the traditional sense.
• Loot Table: minecraft:entities/magma_cube — Can be overridden with datapacks to change what Magma Cubes drop.
• Gamerule doMobSpawning: Set to false to prevent Magma Cube spawning (along with all other mobs).
• Gamerule doMobLoot: Set to false to prevent Magma Cubes from dropping Magma Cream and XP.
• Gamerule mobGriefing: Does not affect Magma Cubes — they do not modify blocks.
• Spawn Event (Bedrock): minecraft:magma_cube — Used in Bedrock behavior packs for spawn rule modifications.

Difficulty & Edition Differences

• Java vs. Bedrock — Small Cube Damage: In Java Edition, small Magma Cubes (size 1) deal 0 damage to players. In Bedrock Edition, they deal 3 damage (1.5 hearts). This is one of the more notable cross-edition differences for this mob.
• Java vs. Bedrock — Jockeys: Magma Cube Jockeys (small cubes riding Striders) only spawn in Bedrock Edition.
• Java vs. Bedrock — Spawning: Java Edition uses a mob cap system that limits total hostile mob count, making spawn-proofing important for farm efficiency. Bedrock Edition uses a density-based system with different behavior.
• Difficulty Scaling: Magma Cube damage values do not change across Easy, Normal, and Hard difficulties. However, their spawn rates and aggression behavior (time between jumps when targeting a player) can be slightly more aggressive on Hard.
• Armor Behavior: Magma Cube armor works identically in both editions, reducing damage from all sources except those that bypass armor (like magic damage, Wither effect, and void damage).

Sounds & Audio

• Squish (Big): entity.magma_cube.squish — Played when a large or medium Magma Cube lands from a jump. A wet, heavy squelch that sounds like someone stepping on a lava-soaked sponge.
• Squish (Small): entity.magma_cube.squish_small — Higher-pitched version for small Magma Cubes.
• Jump: entity.magma_cube.jump — Played when any Magma Cube launches into the air.
• Hurt: entity.magma_cube.hurt — Played when taking damage.
• Hurt (Small): entity.magma_cube.hurt_small — Played when small Magma Cubes take damage.
• Death: entity.magma_cube.death — Played when a Magma Cube dies.
• Death (Small): entity.magma_cube.death_small — Played when a small Magma Cube dies.

History & Major Changes

• Beta 1.9 Prerelease 1 (Java): Magma Cubes added to the game. Initially spawned in the Nether with relatively low rates.
• Java 1.0.0: Official release. Magma Cube behavior and stats finalized for launch.
• Java 1.1: Magma Cube spawn egg added to Creative mode.
• Java 1.5 (13w10a): Magma Cubes can now swim in lava instead of sinking.
• Java 1.11: Entity ID changed from LavaSlime to magma_cube.
• Java 1.16 (Nether Update): Massive change — Basalt Deltas biome added with Magma Cubes as the dominant spawn. This single update turned Magma Cubes from a rarely-seen Nether mob into one of the most frequently encountered hostile mobs in the game.
• Bedrock 1.16.0: Basalt Deltas spawning added to Bedrock, matching Java’s Nether Update.
• Bedrock — Magma Cube Jockeys: Small Magma Cubes gained the ability to spawn riding Striders in Bedrock Edition.

Notable Bugs & Quirks

• Invisible Splits: Occasionally, when a large Magma Cube dies near a chunk border, some of the split cubes may appear invisible briefly until the chunk fully loads them. This is a long-standing rendering quirk, not a gameplay bug — they can still hit you while invisible.
• Jumping Through Blocks: Magma Cubes can occasionally clip through thin blocks (like fences or walls) during their jump animation, particularly at larger sizes. This can cause issues with farm containment if walls are not built thick enough.
• Entity Cramming Splits: If too many Magma Cubes split in a tight space, the entity cramming rule (maxEntityCramming, default 24) can kill the newly spawned cubes before they even have a chance to attack. This is actually useful for farm designs.
• Sound Stacking: When many Magma Cubes are bouncing in a Basalt Delta, their jump and squish sounds can stack into a constant wet squelching cacophony. It is oddly unsettling.

Advancements / Achievements

• Monster Hunter (Java): Kill any hostile mob. Magma Cubes of any size count toward this advancement.
• Monsters Hunted (Java): Kill one of every hostile mob. You need to kill a Magma Cube (any size) to complete this. Given how many spawn in Basalt Deltas, this is one of the easier entries on the list.
• Monster Hunter (Bedrock Achievement): Attack and destroy a hostile mob. Same idea, different platform.
• Adventure (Java): Kill a Magma Cube or discover one to progress the “kill all mob types” requirement.

Spin-offs, Culture & Trivia

• Internal Name: Magma Cubes were originally called “LavaSlime” in the game code, which is about as creative as naming a fire truck “WaterCar.” The ID was changed to magma_cube in 1.11’s entity ID overhaul.
• Slime Cousin: Magma Cubes share the same base AI class as Slimes. They use identical splitting mechanics, the same jump-based movement, and the same size scaling formulas. The main gameplay difference is the armor, fire immunity, and Nether spawning.
• Minecraft Dungeons: Magma Cubes appear as enemies in Minecraft Dungeons, featuring similar bouncing attacks and splitting mechanics adapted for the dungeon-crawling format.
• Magma Cream Irony: You can craft Magma Cream from Blaze Powder and a Slimeball — meaning you can make the Magma Cube’s signature drop without ever fighting one. The game basically told us Magma Cubes are just Slimes filled with Blaze Powder, and honestly, that tracks.
• Basalt Delta Dominance: Before the 1.16 Nether Update, Magma Cubes were one of the rarest hostile mobs in the game. After 1.16, they became one of the most common. That is the biggest glow-up in Minecraft mob history.
• Farm Popularity: Magma Cube farms became a major trend after 1.16 because the Basalt Deltas spawn weight made them absurdly efficient for XP and Magma Cream. The biome was practically designed for farming them.

See Also

• Slime — The Overworld counterpart with similar splitting mechanics
• Blaze — Another Nether hostile mob and source of Blaze Powder for crafting Magma Cream
• Strider — Passive Nether mob that small Magma Cubes can ride in Bedrock Edition
• Magma Block — Crafted from Magma Cream drops
• Fire Resistance Potion — Brewed using Magma Cream