Minecraft Versions and How Each One Changed World Generation
Minecraft Seed Map supports 9 Java Edition version groups, from 1.13 (July 2018) to 1.21.11 (December 2025). The version setting matters because world generation changes between Minecraft versions, so the same seed can build a different world. Below is a Minecraft version history from 1.13 onward, with what each release changed in terrain, biomes and structures, plus the newer 26.x releases the map does not support yet. Last updated November 2026 by the team behind Minecraft Seed Map, an open-source project.
Which Minecraft version should you pick?
Pick the version your world was first created in, not the version you play today. Minecraft keeps every chunk it has already generated when you update, so old areas keep their old terrain and only new chunks follow the new rules. Say you started a world on 1.17 and now play on 1.21. Choose 1.17 for the area around spawn. Land you explored for the first time after updating follows 1.21, so the edges of an old world can match one version while the center matches another. If you are not sure which version made your world, open the seed in two versions and compare spawn with what you see in game.
Supported Minecraft versions
The seed map can generate 9 groups of Minecraft Java versions, from 1.13 to 1.21.11. Each group covers one release and its smaller updates, and this Minecraft versions list runs newest first.
| Version group | Released | Update name | World generation changes |
|---|---|---|---|
| Java 1.21 to 1.21.11 | June 13, 2024 | Tricky Trials | Trial chambers; the Pale Garden biome arrived in 1.21.4 |
| Java 1.20 to 1.20.6 | June 7, 2023 | Trails & Tales | Trail ruins, cherry grove and suspicious sand and gravel |
| Java 1.19 to 1.19.4 | June 7, 2022 | The Wild Update | Deep dark, ancient cities and mangrove swamps |
| Java 1.18 to 1.18.2 | November 30, 2021 | Caves & Cliffs: Part II | Terrain from Y -64 to 320, climate-based biomes, mountains and caves |
| Java 1.17 to 1.17.1 | June 8, 2021 | Caves & Cliffs: Part I | Amethyst geodes and copper ore; world height and biome layout stayed the same as 1.16 |
| Java 1.16 to 1.16.5 | June 23, 2020 | Nether Update | Four new Nether biomes, bastion remnants and ruined portals |
| Java 1.15 to 1.15.2 | December 10, 2019 | Buzzy Bees | Bee nests; biome and structure placement unchanged from 1.14 |
| Java 1.14 to 1.14.4 | April 23, 2019 | Village & Pillage | Rebuilt villages, pillager outposts and bamboo jungles |
| Java 1.13 to 1.13.2 | July 18, 2018 | Update Aquatic | New ocean biomes, shipwrecks, ocean ruins and buried treasure |
Release dates and names follow the Minecraft Wiki version history.
Why 1.18 changed seeds the most
Java 1.18 rebuilt Overworld generation, so a world created before 1.18 looks very different from the same seed generated in 1.18 or later. If your world was made on 1.17 or earlier, a map set to 1.18 or later shows a different world. The Overworld used to run from Y 0 to 255. Since 1.18 it runs from Y -64 to 320, which added deepslate caves below the old bottom of the world and room for much taller mountains above it. Biomes changed too. Since 1.18, the game picks each Overworld biome from six climate values, including temperature, humidity and erosion, instead of the layered system older versions used. The update also added new mountain and cave biomes and renamed several older ones. The Minecraft biomes list shows the full rename table.
Game drops inside 1.21
Every game drop from 1.21.2 to 1.21.11 falls inside the seed map's single Java 1.21 group. Since late 2024, Mojang has shipped these smaller drops several times a year instead of one large update.
| Version | Released | Drop name |
|---|---|---|
| 1.21.2 | October 22, 2024 | Bundles of Bravery |
| 1.21.4 | December 3, 2024 | The Garden Awakens |
| 1.21.5 | March 25, 2025 | Spring to Life |
| 1.21.6 | June 17, 2025 | Chase the Skies |
| 1.21.9 | September 30, 2025 | The Copper Age |
| 1.21.11 | December 9, 2025 | Mounts of Mayhem |
For world generation, the drop that matters most is 1.21.4, The Garden Awakens. It made the Pale Garden part of normal world generation, and woodland mansions can generate in it.
Newer versions: 26.1 and later
Java 26.1, 26.2 and 26.3 are out, but the seed map does not support them yet. After 1.21.11, Mojang switched Java Edition to year-based version numbers, and these are the first three. Java 26.1 (Tiny Takeover) came out on March 24, 2026, followed by 26.2 (Chaos Cubed) on June 16, 2026, and 26.3 (Wilderness Bound) on September 15, 2026. Java 26.2 added the Sulfur Caves biome and 26.3 added the Dappled Forest biome, so a map of a world created in 26.x may not match what you see in game. We add each version to the site's version list only after checking its generation against the game.
Bedrock Edition
Minecraft Seed Map covers Java Edition only. Bedrock Edition places structures with its own rules, so a Java map of a Bedrock seed can put structure markers in the wrong places. Bedrock also uses its own version numbers. A Java version number does not tell you which Bedrock release has the same features.
Frequently asked questions
What is the latest Minecraft version?
The latest Java Edition release is 26.3, Wilderness Bound, which came out on September 15, 2026, according to Minecraft.net. The next drop, 26.4, is planned for late 2026. The seed map does not cover the 26.x releases yet and currently supports Java 1.13 to 1.21.11.
How do I know which version my world was created in?
Pick the version you remember using when you created the world. Minecraft does not show a world's creation version anywhere easy to find. If you are unsure, open your seed in two or three versions on the seed map and compare the land around spawn with what you see in game.
Why does my seed look different in another version?
World generation rules change between versions, so the same seed can build a different world in each one. The biggest change came in 1.18, which rebuilt terrain and biomes. Releases such as 1.14, 1.16, 1.19, 1.20 and 1.21 also added new biomes or structures that change what generates.
Does the seed map support Minecraft 26.1?
Not yet. The seed map supports Java 1.13 to 1.21.11, so 26.1, 26.2 and 26.3 are not mapped. Newer releases such as 26.2 and 26.3 added new biomes, and we add each version only after checking the map against it. You can follow that work on the project's GitHub page.
Which Minecraft version changed world generation the most?
Java 1.18, Caves & Cliffs: Part II, released on November 30, 2021, changed world generation the most. It raised the world height to Y -64 to 320, rebuilt mountains and caves, and moved biome placement to a six-value climate system. The same seed looks very different before and after it.
Does the seed map support versions before 1.13?
No. The oldest supported version is Java 1.13, Update Aquatic, released on July 18, 2018. That release reworked oceans, and the map has no generation profile for anything older. A world created on 1.12 or earlier may not match the map, even with the 1.13 setting.
Open your seed in the right version
Open your seed on the Minecraft seed map and choose the version your world was created in. To see what generates in each version, browse the biomes list and the structures list.