
Alpha Gaia
Adds an Alpha 1.1.2-style world-preset through a datapack.
Screenshots






About this Mod
Alpha Gaia
This is a data pack that adds in an Alpha 1.1.2-style World Preset. Since this is a data pack, it will not be a perfect replica, as many features would require mod changes to do (see Differences below). This is just a way to get the Alpha vibes in vanilla.
This means Seeds from Alpha will not work. Use mods like Moderner Beta if you want to do something like that.
The Mod version is simply a package for the data pack and language pack for ease of installing.
Notable Additions from Alpha:
- Mobs
- Only mobs from Alpha can spawn naturally, examples:
- Drowned can spawn from transforming a Zombie into one (not a natual spawn)
- Zombie Villagers can't, because they do have separate IDs
- Baby Zombies can spawn though, as they have the same ID as Zombies
- Only mobs from Alpha can spawn naturally, examples:
- Structures
- Only Monster Rooms spawn
- World Features
- Only the Foliage from Alpha will spawn
- Only the Ores from Alpha will spawn
Differences:
- World Height
- 256 instead of 128. This is more of a past limitation than a unique old feature
- W.I.P: Old Height Add-on
- Nether
- The Alpha 1.2.0 Nether is added to this, despite it not existing in Alpha 1.1.2
- Caves
- Can generate with water in them due to data pack limitations
- Less water on the surrounding surface means less water underground
- Can generate in bodies of water
- Can generate with water in them due to data pack limitations
- Biome Colors
- Are not identical to Alpha (e.g. grass/water/leaves). I tried my best to sample colors, but the foliage color just isn't coming out the same
- Stone Basins
- Are not square and glitchy like in Alpha
These have been adjusted to be close to Alpha, but aren't perfect:
- Ores
- Including deposits, like dirt and clay
- Cave Generation
- Vegetation
- Flowers, trees, pumpkins, sugarcane, cacti, etc.
- Ponds/Lakes/Oceans
- Sandy/Gravel "Beaches"
- Terrain Shape
If you are an Alpha Code fanatic and know of exact spawn rates/probabilities for any of these features, or think you can implement them in a better way, feel free to contribute on the GitHub page or my Discord!
Please keep in mind I wish to keep this as a Data Pack, as there are plenty of other projects that seek to do what I'm doing in the form of a mod, like Moderner Beta.
Available Versions
How to Install Alpha Gaia on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.10).
Install Mod
Open the mod browser in the dashboard and search for "Alpha Gaia". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.10, 1.21.9, 1.21.8 (+15 more)
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
Alpha Gaia server crashes on startup – what to do?
Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.
Is Alpha Gaia compatible with datapack and fabric and forge and neoforge and quilt?
Alpha Gaia officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.10, 1.21.9, 1.21.8. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Alpha Gaia – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Alpha Gaia consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Alpha Gaia with just one click on your server.