World by McMeddon January 1, 2026 20260716

Testworld

Quick 3D preview Drag to orbit · Scroll to zoom

SURVIVAL WORLD CONTENTS Beta Inspector

What’s included in Testworld?

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

Minecraft release

Loading world coverage…

LEVEL.DAT

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.

Help

Questions about Testworld

This world Install and use

What is Testworld?

Testworld is a hand-made survival world of 1,025 × 1,025 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 Testworld?

1,025 × 1,025 blocks, so about 1 million blocks of surface. Walking from one edge to the other takes roughly 4 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 Testworld need?

Testworld is made for Minecraft Java 1.21.5 and opens in 1.19 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 1.19 cannot open it.

Bedrock players need a converted copy. See the Bedrock notes in the FAQ.

Which biomes are in Testworld?

6 in total. The land is mostly Plains (89.4%), Stony Shore (4.9%), Beach (3.7%) and Forest (2.0%), counted as shares of the land rather than of the whole map.

Water covers 45.1% of the map, and land 54.9%.

By volume this world's caves are Normal Caves (99.2%) and Magma Caves (0.7%). The cave breakdown has the rest.

The full breakdown is further up this page, with every biome and its share.

Which structures are in Testworld?

8 of the 20 structure types the scan checks are confirmed present: surface (0/8), underground (4/6), ocean (3/4), portal structures (1/1) and settlements (0/1).

Not confirmed: Abandoned camps (not checked), Desert pyramids (not checked), Igloos (not checked), Jungle pyramids (not checked), Pillager outposts (not checked) and Swamp huts (not checked). "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 Testworld 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.

Can I look at Testworld 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 Testworld on Java Edition?

Unpack the archive you downloaded.
Open your saves folder. On Windows press Win + R and 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.

Full install guide

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.

Bedrock install · Bedrock quirks · Server use

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.

· How to credit · Selling builds

Full FAQ Ask on Discord All worlds

Every world, and the source files with them Members get the world downloads, the source files behind them, and a new world most months. Join on Patreon More worlds like this one, every one of them free to fly through in 3D. Browse the library

Start with what it is for

Or by what is in it

Version

World size

Ships with

Landscape

Structures

Picked by McMeddon

Testworld

Overview

Size

Versions

Biome composition

Land 54.9% of map 4/37 found

Water 45.1% of map 2/10 found

Caves of the cave volume 2/4 found

Caves

Structure coverage

Surface 0/8 confirmed

Underground 4/6 confirmed

Ocean 3/4 confirmed

Portal structures 1/1 confirmed

Settlements 0/1 confirmed

* Why these are not confirmed

Loot tables

Chest loot 8/22 confirmed

Village chest loot 0/16 confirmed

Structure loot 1/2 confirmed

Archaeology 1/1 confirmed

* Why these are not confirmed

What’s included in Testworld?

Explore the world contents

Key compatibility details

Inspect the world data

Questions about Testworld