Advent Map 20
Overview
3k, 1.21.5, Survival Skyblock World
Advent Map 20, A 9km² custom Advent Calendar Minecraft Map in the shape of an kinda merged 20, created by McMeddon. Sky high, light as a feather, and bigger than your mo- dern skyblock world. A giant floating skyblock world, with huge mountin ranges, big forests, rivers, lakes, and rugged cliffs. Enjoy your adventure!
News & updates
Size
Footprint
6,144 × 6,144
blocks, 37.7 km² at one block per metre
Edge to edge
- Happy ghast 28 min
- On foot 24 min
- Minecart 13 min
- Horse 11 min
- Elytra 3 min
Walking, a minecart on powered rails, an average horse and rocket-boosted elytra.
Sizes in the library 75% smaller than this
Most worlds are 4K (88 of them). The largest is Eulyxian at 12K.
Versions
Older releases drop what they do not know yet. Each row lists what it loses on top of the rows above it.
- 1.21.5and newer Made for
The world as built. Nothing is lost.
- 1.21.2–1.21.4
- Blocks
- Firefly bush, Leaf litter, Short dry grass, Tall dry grass
- 1.21–1.21.1
- Biomes
- Pale Garden becomes plains
- Blocks
- Pale oak leaves, Pale oak logs, Closed eyeblossom, Pale hanging moss, Pale moss block, Pale moss carpet
- 1.20.5–1.20.6
- Structures
- Trial chambers
- 1.20.2–1.20.4
- Items
- Pre-filled containers (241 stacks) are emptied Apple, Bread, Emerald, Infested cobblestone, Arrow, Potatoes, Flint, Poppy and more
- Blocks
- Vault
- 1.20–1.20.1
- Blocks
- Chiseled tuff, Chiseled tuff bricks, Oxidized copper trapdoor, Polished tuff, Polished tuff slab, Short grass
+13 more
Trial spawner, Tuff bricks, Waxed chiseled copper, Waxed copper bulb, Waxed copper door, Waxed copper grate, Waxed exposed copper bulb, Waxed oxidized chiseled copper, Waxed oxidized copper bulb, Waxed oxidized copper door, Waxed oxidized copper grate, Waxed oxidized copper trapdoor, Waxed weathered copper bulb
- 1.19.4and older
Does not load.
Biome composition
Shares are measured across the built map, and "not found" means not in the built map. Past its edge the world keeps generating normal vanilla Minecraft chunks, so those biomes can still be found out there.
Land 98.7% of map 22/41 found
-
Badlands Missing -
Bamboo Jungle Missing -
Beach 1.0% -
Birch Forest 0.2% -
Cherry Grove 0.2% -
Dappled Forest Missing -
Dark Forest Missing -
Desert Missing -
Eroded Badlands Missing -
Flower Forest 0.2% -
Forest 1.1% -
Frozen Peaks 0.3% -
Grove Missing -
Ice Spikes Missing -
Jagged Peaks 2.5% -
Jungle 1.7% -
Mangrove Swamp <0.1% -
Meadow 0.1% -
Mushroom Fields 0.1% -
Old Growth Birch Forest Missing -
Old Growth Pine Taiga 0.4% -
Old Growth Spruce Taiga Missing -
Pale Garden <0.1% -
Plains 87.1% -
Savanna 0.4% -
Savanna Plateau Missing -
Snowy Beach Missing -
Snowy Plains <0.1% -
Snowy Slopes 1.0% -
Snowy Taiga <0.1% -
Sparse Jungle Missing -
Stony Peaks 2.7% -
Stony Shore 0.8% -
Sunflower Plains Missing -
Swamp <0.1% -
Taiga 0.1% -
Windswept Forest Missing -
Windswept Gravelly Hills Missing -
Windswept Hills Missing -
Windswept Savanna Missing -
Wooded Badlands Missing
- Plains 87.1%
- Stony Peaks 2.7%
- Jagged Peaks 2.5%
- Jungle 1.7%
- Forest 1.1%
- Beach 1.0%
- Snowy Slopes 1.0%
- Stony Shore 0.8%
- Savanna 0.4%
- Old Growth Pine Taiga 0.4%
- Frozen Peaks 0.3%
- Birch Forest 0.2%
- Cherry Grove 0.2%
- Flower Forest 0.2%
- Meadow 0.1%
- Mushroom Fields 0.1%
- Taiga 0.1%
- Pale Garden <0.1%
- Snowy Plains <0.1%
- Swamp <0.1%
- Snowy Taiga <0.1%
- Mangrove Swamp <0.1%
- Badlands Missing
- Bamboo Jungle Missing
- Dappled Forest Missing
- Dark Forest Missing
- Desert Missing
- Eroded Badlands Missing
- Grove Missing
- Ice Spikes Missing
- Old Growth Birch Forest Missing
- Old Growth Spruce Taiga Missing
- Savanna Plateau Missing
- Snowy Beach Missing
- Sparse Jungle Missing
- Sunflower Plains Missing
- Windswept Forest Missing
- Windswept Gravelly Hills Missing
- Windswept Hills Missing
- Windswept Savanna Missing
- Wooded Badlands Missing
Water 1.1% of map 1/11 found
-
Cold Ocean Missing -
Deep Cold Ocean Missing -
Deep Frozen Ocean Missing -
Deep Lukewarm Ocean Missing -
Deep Ocean Missing -
Frozen Ocean Missing -
Frozen River Missing -
Lukewarm Ocean Missing -
Ocean Missing -
River 100.0% -
Warm Ocean Missing
- River 100.0%
- Cold Ocean Missing
- Deep Cold Ocean Missing
- Deep Frozen Ocean Missing
- Deep Lukewarm Ocean Missing
- Deep Ocean Missing
- Frozen Ocean Missing
- Frozen River Missing
- Lukewarm Ocean Missing
- Ocean Missing
- Warm Ocean Missing
Caves of the cave volume 3/4 found
-
Deep Dark 0.2% -
Dripstone Caves 1.8% -
Lush Caves 3.5% -
Sulfur Caves Missing
- Lush Caves 3.5%
- Dripstone Caves 1.8%
- Deep Dark 0.2%
- Sulfur Caves Missing
Shares are of the cave volume, from the underground scan. See Caves for the full breakdown.
Caves
What this world's caves are made of, by volume, measured from the save in 4 block cells.
Measured under the built map, and "not found" means not under it. Past its edge the world keeps generating normal vanilla Minecraft chunks, so vanilla cave biomes missing here can still be found out there.
- Deep Dark 0.2%
- Dripstone Caves 1.8%
- Ice Caves Missing
- Lush Caves 3.5%
- Magma Caves 0.2%
- Normal Caves 94.3%
- Sulfur Caves Missing
- Normal Caves 94.3%
- Lush Caves 3.5%
- Dripstone Caves 1.8%
- Deep Dark 0.2%
- Magma Caves 0.2%
- Ice Caves Missing
- Sulfur Caves Missing
Inferred. These have no biome of their own in Minecraft, so they are named from the blocks around the cave rather than read from the save.
Structure coverage
Counted inside the built map. Past its edge the world keeps generating normal vanilla Minecraft chunks, so structures not confirmed here can still generate out there.
Surface 3/8 confirmed
- Abandoned camps Missing
- Desert pyramids Missing
- Igloos Missing
- Jungle pyramids Included
- Pillager outposts Included
- Swamp huts Missing
- Trail ruins Included
- Woodland mansions Missing
- Jungle pyramids Included
- Pillager outposts Included
- Trail ruins Included
- Abandoned camps Missing
- Desert pyramids Missing
- Igloos Missing
- Swamp huts Missing
- Woodland mansions Missing
Underground 5/6 confirmed
- Amethyst geodes Included
- Ancient cities Loot only*
- Dungeons / monster rooms Included
- Mineshafts Included
- Strongholds Included
- Trial chambers Included
- Amethyst geodes Included
- Dungeons / monster rooms Included
- Mineshafts Included
- Strongholds Included
- Trial chambers Included
- Ancient cities Loot only*
Ocean 1/4 confirmed
- Buried treasure Missing
- Ocean monuments Missing
- Ocean ruins Missing
- Shipwrecks Included
- Shipwrecks Included
- Buried treasure Missing
- Ocean monuments Missing
- Ocean ruins Missing
Portal structures 1/1 confirmed
- Ruined portals Included
- Ruined portals Included
Settlements 1/1 confirmed
- Villages Included
- Villages Included
* Why these are not confirmed
- Ancient cities Loot only: its loot table is in this world, but the structure itself was not found.
Loot tables
Which of the game's loot tables can turn up on this map, read from the world's own files. Included means the scan found the table itself; missing means neither it nor the structure carrying it was found in the built map.
Counted inside the built map. Past its edge the world keeps generating normal vanilla Minecraft chunks, so tables not seen here can still turn up out there.
Chest loot 12/22 confirmed
- Abandoned mineshaft Included
- Ancient city Included
- Buried treasure chest Missing
- Desert pyramid Missing
- End City treasure Possible*
- Igloo chest Missing
- Jungle temple arrow dispenser Missing
- Jungle temple chest Included
- Nether fortress bridge Possible*
- Pillager outpost Missing
- Ruined portal Included
- Shipwreck map Included
- Shipwreck supply Included
- Shipwreck treasure Included
- Simple dungeon Included
- Spawn bonus chest Included
- Stronghold corridor Included
- Stronghold crossing Included
- Stronghold library Included
- Underwater ruin (big) Missing
- Underwater ruin (small) Missing
- Woodland mansion Missing
- Abandoned mineshaft Included
- Ancient city Included
- Jungle temple chest Included
- Ruined portal Included
- Shipwreck map Included
- Shipwreck supply Included
- Shipwreck treasure Included
- Simple dungeon Included
- Spawn bonus chest Included
- Stronghold corridor Included
- Stronghold crossing Included
- Stronghold library Included
- Buried treasure chest Missing
- Desert pyramid Missing
- End City treasure Possible*
- Igloo chest Missing
- Jungle temple arrow dispenser Missing
- Nether fortress bridge Possible*
- Pillager outpost Missing
- Underwater ruin (big) Missing
- Underwater ruin (small) Missing
- Woodland mansion Missing
Village chest loot 10/16 confirmed
- Village armorer Included
- Village butcher Missing
- Village cartographer Included
- Village desert house Missing
- Village fisher Missing
- Village fletcher Included
- Village mason Missing
- Village plains house Included
- Village savanna house Included
- Village shepherd Missing
- Village snowy house Included
- Village taiga house Included
- Village tannery Included
- Village temple Missing
- Village toolsmith Included
- Village weaponsmith Included
- Village armorer Included
- Village cartographer Included
- Village fletcher Included
- Village plains house Included
- Village savanna house Included
- Village snowy house Included
- Village taiga house Included
- Village tannery Included
- Village toolsmith Included
- Village weaponsmith Included
- Village butcher Missing
- Village desert house Missing
- Village fisher Missing
- Village mason Missing
- Village shepherd Missing
- Village temple Missing
Structure loot 1/2 confirmed
- Abandoned camp loot Missing
- Trial chamber loot Included
- Trial chamber loot Included
- Abandoned camp loot Missing
Archaeology 1/1 confirmed
- Archaeology loot Included
- Archaeology loot Included
* Why these are not confirmed
- End City treasure Possible: outside the scanned Overworld; the vanilla Nether or End generates it.
- Nether fortress bridge Possible: outside the scanned Overworld; the vanilla Nether or End generates it.
What’s included in Advent Map 20?
See what this Minecraft world contains. Results combine MCA Selector findings, chunk data, level.dat, and manually placed structure pins.
Beta edition: some results are still being verified.
- Seed
- Unknown
- World type
- Unknown
DETAILED INVENTORY Explore the world contents
Search and filter the registries found in this world.
Open the inventory Close the inventory
Explore the world contents
Search and filter the registries found in this world.
Biomes
Biome types found in the existing Overworld.
Structures
StructuresSurface and underground structure types evidenced by existing starts or reviewed markers.
Loot types
Loot typesLoot families evidenced by existing loot-table references.
Animals
AnimalsAnimal types observed in the existing world.
Blocks
BlocksReference inventory only. Missing crafted or dimension-specific IDs are not automatically survival failures.
Cave biomes
Vanilla cave biomes found in the existing Overworld. Custom cave types have no biome ID in a save, so this scan cannot detect them.
Key compatibility details
The most relevant survival features, grouped by category.
No features match these filters.
This report inventories existing save data without loading, generating, or changing chunks. Vanilla terrain may still generate beyond the existing map boundary.
Inspect the world data
The world settings Minecraft stores in level.dat, as captured when this world was scanned. Read only, and player data is never published.
No fields match that search.
Questions about Advent Map 20
- What is Advent Map 20?
-
Advent Map 20 is a hand-made survival world of 6,144 × 6,144 blocks, made with WorldPainter, World Machine, Gaea, Axiom and WorldEdit, built for Minecraft Java 1.21.5. You download the world folder and play it like any other save, in singleplayer or on your own server.
- How big is Advent Map 20?
-
6,144 × 6,144 blocks, so about 38 million blocks of surface. Walking from one edge to the other takes roughly 24 minutes at normal walking speed. The terrain runs from Y -64 to Y 320.
Outside that area the world keeps generating normal vanilla Minecraft chunks, so you never hit a wall, you just leave the built part behind.
- Which Minecraft version does Advent Map 20 need?
-
Advent Map 20 is made for Minecraft Java 1.21.5 and opens in 1.20 and later. Between the two, anything added after the release you load it in is removed or replaced (new biomes load as plains), so 1.21.5 or newer shows the world as built. Releases older than 1.20 cannot open it.
Bedrock players need a converted copy. See the Bedrock notes in the FAQ.
- Which biomes are in Advent Map 20?
-
26 in total. The land is mostly Plains (87.1%), Stony Peaks (2.7%), Jagged Peaks (2.5%) and Jungle (1.7%), counted as shares of the land rather than of the whole map.
Water covers 1.1% of the map, and land 98.7%.
By volume this world's caves are Normal Caves (94.3%), Lush Caves (3.5%) and Dripstone Caves (1.8%). The cave breakdown has the rest.
The full breakdown is further up this page, with every biome and its share.
- Which structures are in Advent Map 20?
-
11 of the 20 structure types the scan checks are confirmed present: surface (3/8), underground (5/6), ocean (1/4), portal structures (1/1) and settlements (1/1).
Not confirmed: Abandoned camps (missing), Desert pyramids (missing), Igloos (missing), Swamp huts (missing), Woodland mansions (missing) and Ancient cities (loot only). "Missing" means the scan looked and it is not in the built map; "loot only" means its chests are here but the structure is not; "possible" means only indirect evidence was found.
The structure list above names every one of them.
- Is Advent Map 20 ready to play in survival?
-
Yes. A scan of the world file confirms loot tables, structures, animals and ores, so the survival loop runs from the first night: chests hold the game's real loot tables, mobs spawn as they do anywhere else, and you can mine, farm and build without adding anything. It plays in vanilla Minecraft, with no mods, no datapacks and no creative mode.
The world contents report at the bottom of this page holds the item-by-item detail.
- Where do I download Advent Map 20?
-
From the download link on Google Drive, also on the button at the top of this page.
Also available: the PlanetMinecraft project page, which carries the release notes and the known issues for this particular build.
- Can I look at Advent Map 20 before downloading it?
-
Yes. Open it in the 3D explorer and fly the real terrain in your browser, with the biomes, the caves and the marked structures. Nothing to install.
How do I install Advent Map 20 on Java Edition?
- Unpack the archive you downloaded from Google Drive.
- Open your saves folder. On Windows press
Win+Rand enter%appdata%\.minecraft\saves. On macOS it is~/Library/Application Support/minecraft/saves, on Linux~/.minecraft/saves. - Move the unpacked folder in. It must be the folder that contains
level.dat, not a folder wrapping it. - Restart Minecraft on 1.21.5 or newer and pick the world in singleplayer.
Can I play it on Bedrock, or on a server?
Bedrock needs a converted .mcworld copy, and converted worlds carry their own
quirks around spawn, chests and villagers.
For a server, drop the world folder in as the server's world and start it.
What may I do with it?
The worlds are released under CC BY-NC 4.0. The Rights panel on this page lists what that allows and how to credit it.