World 6

World 6: Upside Realm

Upside Realm is world 6 of 10, in the mastery tier. Its rule is Gravity. You open it with the Twin Mirrors, made from the core of the World 5 boss (Light Eater).

At a glance

Tier	Mastery
Rule	Gravity
Station	Inverter
Boss	Your Double (2242 health, 29.9 damage)
Core	Double Core
People	Free Reflection
Way in	Twin Mirrors: 1 Light Eater Core, 8 Shadow Shard, 4 Diamond Fragment
Variants	Steady Realm (calm), Spinning Realm (wild)
Atmosphere	Inverted pastel: a mint sky over pink fog, lilac clouds, mirror shards falling upward
Biomes	Its own, with two lesser biomes at its edges: Crystal Fields (amethyst block floor) and Mirror Flats (smooth quartz floor)
Surge	Gravity Storm
Travelling merchant	Stray Reflection

Opening the world

• Recipe of the Twin Mirrors (Matrix Workbench, after the World 5 boss (Light Eater) is defeated): 1 Light Eater Core, 8 Shadow Shard, 4 Diamond Fragment.
• Rite: Set them between two glass blocks facing each other, two blocks away on either side. See The way into each world.
• Arrival: a Threshold platform at the centre of your group's parcel. The boss arena is 160 blocks south (positive Z).

Terrain

Amplified terrain with cherry trees, Prism Moss and Inverted Stone.

Block	Type	Drops
Inverted Stone	Stone (pickaxe)	itself
Mirror Glass	Glass, see-through	itself
Prism Moss	Soft (shovel)	itself
Unstable Alloy Ore	Ore (pickaxe, correct tool needed)	Unstable Alloy

The rule: Gravity

Up, down and falls are no longer reliable.

The flipped columns

The realm is cut into columns of 32 x 32 blocks. At any time about a third of them are flipped, and every 90 seconds the pattern changes.

• Inside a flipped column gravity points up. You, the creatures and the items on the ground fall toward the sky.
• Under an overhang, in a cave or below a bridge, you land on the ceiling and walk on it. Jumping pushes you away from it, downward.
• In the open, the pull reaches 16 blocks above the column's ground. Past that height it fades and you hang there, bobbing, until you leave the column or it turns back.
• Purple sparks draw curtains along the borders between flipped and normal columns around you; inside a flipped column, white motes drift upward.
• 5 seconds before the pattern changes: "Gravity is about to flip."
• When the column you were falling up in turns back, you drift down slowly for 12 seconds. Walk off a ceiling into a normal column, though, and you simply fall.
• The 48 blocks around the Threshold and the boss stage are never flipped.

Protection

• Gravity Boots: your gravity never flips.
• Stabilizer: 30 seconds of normal gravity.
• Flipped Apple: 30 seconds of normal gravity.

Also

• An Unstable Sphere still gives Levitation II for 3 seconds to everyone within 6 blocks when it dies.
• Elytra stop working here until the World 8 boss is beaten.

Achievements

• Ceiling Walk: be caught by a flipped column (or stand near a dying Unstable Sphere).
• Vertigo (hidden): fall upward for 10 seconds without touching anything.

Numbers

32 x 32	blocks per gravity column
about 1 in 3	columns flipped at a time
90 s	between two changes of the pattern
5 s	of warning
16	blocks above the ground: how high a flipped column pulls
12 s	of slow fall when your column turns back

Creatures

Creatures spawn naturally in the world (regular ones in groups of 1 to 3, swarms in groups of 2 to 4, elites alone and rarer) and from spawners in combat structures. See the Bestiary for all fifty.

Creature	Health	Damage	Traits	Behavior (as coded)	Drops
Reflection	90	14.9	-	When you hit it, its attack damage becomes the damage you just dealt (never lower than its base).	Inverted Crystal (60%)
Ceiling Walker	117	12.4	-	Climbs walls when it bumps into them.	Unstable Alloy (60%)
Unstable Sphere	63	19.9	flying	Drifts toward you. On death, gives Levitation II (3 s) to every player within 6 blocks.	Unstable Alloy (60%)
Inverted Strider	135	14.9	-	Plain melee attacker.	Inverted Crystal (60%)
Broken Mirror	179	17.4	elite, nesting	Returns 30% of the damage it takes to the attacker. Nesting: on death splits into 2 smaller copies (60% size, 40% health, 30% faster) that drop nothing.	Inverted Crystal (100%, 1-2)

Items

Item	Kind	Rarity (souls)	Effect
Unstable Alloy	ingot	rare (10)	Base of World 6 gear.
Inverted Crystal	gem	epic (30)	Inverter and the Abyssal Pearl (World 7).
Gravity Boots	boots	epic (30)	Ignore gravity flips. In code: Feet slot. Your gravity never flips in a flipped column.
Stabilizer	consumable	common (1)	Cancels an inversion. In code: Right-click: 30 s of normal gravity, even in a flipped column.
Mirror Blade	weapon	epic (30)	Sword-type weapon, about 19 attack damage. Gets a random class when crafted.
Mirror Helmet	armor	epic (30)	4 armor, 2 toughness, +1 max health
Mirror Chestplate	armor	epic (30)	8 armor, 2 toughness, +3 max health
Mirror Leggings	armor	epic (30)	6 armor, 2 toughness, +2 max health
Mirror Boots	armor	epic (30)	4 armor, 2 toughness, +1 max health
Flipped Apple	food	common (1)	Stability for 30 seconds. Food: 6 hunger, 0.8 saturation, always edible.

The Twin Mirrors and the Hidden Doll 6 are listed on the Items page.

Station: Inverter

Every gain comes with a flaw. Crafted at the Matrix Workbench from 2 Observer (vanilla), 6 Shadow Shard (World 5 boss defeated).

How it works: Every gain has a flaw: anything with durability comes out already 25% worn. The Inverter also swaps properties: place two pieces of the same kind (two armor pieces, two weapons or two tools) in the two sockets of its niche and press Invert. They trade their class, class level and enchantments; each loses a quarter of its durability and counts one more class change (Chance Doll rerolls cost more), and an enchantment the other piece cannot carry is lost.

Output	Ingredients	Unlocked
Gravity Boots	6 Unstable Alloy, 2 Inverted Crystal	Always
Stabilizer x3	1 Unstable Alloy, 2 Quartz (vanilla)	Always
Flipped Apple x2	2 Apple (vanilla), 1 Inverted Crystal	Always
Mirror Blade	8 Unstable Alloy, 1 Stick (vanilla)	Always
Mirror Helmet	5 Unstable Alloy	Always
Mirror Chestplate	8 Unstable Alloy	Always
Mirror Leggings	7 Unstable Alloy	Always
Mirror Boots	4 Unstable Alloy	Always

Every weapon, tool and armor piece crafted here gets a random class (see Equipment classes).

Boss: Your Double

2242 health, 29.9 damage, phases at 66% and 33% of its health. Summon it with the Arena Altar. It drops Double Core, and every player within 64 blocks gets 100 souls and credit for the kill.

Attack	What the code does
Light: Copied Strike	Frontal strike: 60% damage within 3.2 blocks.
Medium: Copied Weapon	Copies the item in your main hand into its own hand, then hits the area around you (70% damage, radius 3).
Signature: Gravity Flip	Gravity flip: Levitation III for 2 seconds to everyone within 16 blocks.
Final phase: It adopts your play style	Phase change only.

Full mechanics, timings and multiplayer scaling: Bosses. Its animations, attack by attack: Boss attacks.

Structures

Eleven structure types generate in this world (the eleventh since 0.4.0). Each is built procedurally from a layout and the world's palette.

Structure	Role	Size	Rarity	Layout	Frequency	Contents
Hall of Mirrors	combat	medium	common	arena	about one per 18 x 18 chunks	a mob spawner (a regular creature of the world) and a loot chest
Hanging Cage	combat	small	common	cell	about one per 18 x 18 chunks	a mob spawner (a regular creature of the world) and a loot chest
Unstable Core	combat	large	rare	cocoon	about one per 42 x 42 chunks	a mob spawner (a regular creature of the world) and a loot chest
Inverted Tower	exploration	large	rare	tower	about one per 42 x 42 chunks	two loot chests
Ceiling City	exploration	large	rare	city	about one per 42 x 42 chunks	two loot chests
Upturned Pool	exploration	medium	common	well	about one per 18 x 18 chunks	two loot chests
Gravity Lab	story	medium	unique	lab	about one per 64 x 64 chunks	a chest with a Journal Page, and a painted frieze
Impossible Stair	story	medium	unique	stair	about one per 64 x 64 chunks	a chest with a Journal Page, and a painted frieze
Reflection Refuge	utility	medium	rare	village	about one per 34 x 34 chunks	a member of the world's people
Floating Garden	secret	small	unique	garden	about one per 64 x 64 chunks	a chest with a Journal Page and the world's Hidden Doll
Hanging Outpost	combat	medium	rare	outpost	about one per 34 x 34 chunks	mob spawners and a guarded loot chest

World events

While you are here, now and then (see World events):

• Invasion: three waves of the world's creatures, the last led by a glowing warlord, one of its elites; beat it within four minutes for a reward chest and 60 souls each.
• Surge: Gravity Storm. For two minutes the world's rule bites twice as hard. On top of it: You are thrown up at random, then caught by slow falling (a Stabilizer protects you). Weather it for 15 souls.
• Travelling merchant: Stray Reflection, for five minutes: Shell Shard for 6 Unstable Alloy, Mutated Scale for 2 Inverted Crystal, Gravity Boots for 4 Unstable Alloy (each trade twice).

People: Free Reflection

Reflections that broke away from their originals and trade the wrong way round. They spawn naturally in small numbers and one stands in every utility structure of the world. Prices drop by 10% at karma +25 and rise by 10% at karma -25; at karma -50 or lower they refuse to trade one time in three (see Souls and karma).

They want	They give
Unstable Alloy x2	Stabilizer x3
Inverted Crystal x1	Flipped Apple x3

Quests

Available once World 6 is open (that is, once the World 5 boss (Light Eater) is defeated). See Quests.

Quest	Type	Description	Objective as coded	Reward
Fall Upward	Guide	Craft gravity boots.	Craft Gravity Boots	8 Stabilizer
Double Meaning	Guide	Use the Inverter.	Craft Mirror Blade	30 souls
Lost Reflection	People	Bring back an NPC's double.	Kill 5 Reflection	30 souls
The Impossible Stair	People	Reach the top of the stair.	Carry 2 Inverted Crystal (counted from your inventory, not taken)	1 Journal Page
Who Is Real?	Karma	Free the Reflection (+5) or take its place (-5).	Choose Help (+5 karma) or Betray (-5 karma) in the Journal	50 souls
Upside Down	Challenge	Defeat a Broken Mirror.	Kill 1 Broken Mirror	Title: Head Down

Achievements

Achievement	Type	Description	How it unlocks in the code	Reward
Upside Down	progress	Open World 6.	Enter World 6.	5 souls
Feet on the Ground	progress	Craft gravity boots.	Have Gravity Boots in your inventory.	5 souls
Face to Face	progress	Defeat Your Double.	Land the killing blow on Your Double.	5 souls
Ceiling Walk	explore	Live through a gravity flip.	Be caught by a flipped gravity column without protection, or stand near a dying Unstable Sphere.	10 souls
Impossible Geometry	explore	Visit the 10 structure types.	Step inside all 10 structure types of this world.	10 souls
Reading Backwards	explore	Find the 5 Journal pages.	Collect the 5 Journal Pages of this world.	10 souls
Return to Sender	combat	Kill a Reflection.	Land the killing blow on Reflection.	-
No Copy	combat	Beat the Double with different gear each phase.	Wear a different set of weapon and armor at the end of each phase of the Double.	-
Vertigo	hidden	Fall upward for 10 seconds.	Fall upward in a flipped column for 10 seconds without touching anything.	-
Flipped Doll	hidden	Find the hidden doll of the world.	Have Hidden Doll 6 in your inventory.	-

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