
Mars's Fallout Expansion
This project adds mobs, blocks, items, and mechanics seen in and inspired by the Fallout Universe.
Screenshots






About this Mod

War… war never changes… but your Minecraft world is about to.
Mars’s Fallout Expansion brings the dangerous, apocalyptic feel of the wasteland into Minecraft with new creatures, game mechanics, weapons, structures, blocks, and loot directly from and inspired by the Fallout universe.
This is my first mod, and the goal is simple: make Minecraft feel more hostile, more rewarding, and a lot more post-apocalyptic.
REQUIRES
GeckoLib
What This Mod Adds
Wasteland Creatures

Face off against familiar Fallout-inspired enemies, including:
- Bloatflies
- Feral Ghouls
- Eyebots
- Radroaches
- Mole Rats
- Mirelurks
- Protectrons
- And more to come
Radiation System

The wasteland is dangerous even when nothing is attacking you.
Radiation can build up from contaminated areas, irradiated food, Uranium Ore deposits, and other hazards. Manage your exposure, use protective gear, and keep yourself alive before the rads cook you from the inside out.
Thirst System

Survival is no longer just about hunger.
You’ll need to watch your thirst, collect water, purify it, and think more carefully about what you eat and drink while exploring.
Weapons, Armor, Blocks, and Items

Build, fight, and survive with new content inspired by the Fallout universe, including:
- Wasteland weapons
- Fallout-style foods and drinks
- Decorative and functional apocalypse-themed blocks
- Armor and survival items
- Lootable containers
- Lockpicking Minigame
- And more
New Structures

Find new Fallout-inspired structures to discover such as:
- Destroyed buildings
- Nuclear waste disposal sites
- Scrap shacks
- Mirelurk nests
- Abandoned vehicles
- RobCo Sales and Service Center
- And more planned for future updates
Future Plans
- More content is already planned, including:
- Mr. Gutsy
- Mr. Handy / Ms. Nanny
- Vaults
- Deathclaws
- Fat Man / Mini Nukes
- TACZ integration
- More mobs, structures, weapons, blocks, and features
Final Note
This mod is still growing, and since it’s my first mod, feedback is welcome. Expect more updates soon!
Welcome to the wasteland. Hope you have some radaway.
Available Versions
How to Install Mars's Fallout Expansion on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "Mars's Fallout Expansion". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Mars's Fallout Expansion server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.
Is Mars's Fallout Expansion compatible with forge?
Mars's Fallout Expansion officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Mars's Fallout Expansion – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Mars's Fallout Expansion 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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