Fallout Immersion Project - Arktos
"Reclaim the wasteland, one biome at a time."
[Open Beta] This mod is under active development - updates and patches may drop anytime.
Your feedback directly shapes development!
Features
- Rebuilds RimWorld world generation around Fallout-style biomes, landmarks, and region flavor.
- Adds custom biome, feature, landmark, and mutator defs instead of leaving Fallout worldbuilding spread across unrelated modules.
- Patches wild plants, animals, incidents, and landmark generation for FCP Plants, FCP Animals, and selected Vanilla Expanded ecosystem mods.
- Keeps Odyssey integration optional, so the core wasteland worldgen package can stand on its own.
Requirements
- FIP - H&H Tools - Required (shared defs, naming rules, and framework content)
Recommended
- FCP - Plants - Optional (expanded wasteland flora integration)
- FCP - Animals - Optional (animal spawn integration if you use the FCP fauna set)
- Vanilla Plants Expanded, More Plants, Mushrooms, and Succulents - Optional (extra vegetation patch coverage)
- Vanilla Animals Expanded, Royal Animals, Waste Animals, and Vanilla Fishing Expanded - Optional (extra fauna patch coverage)
- Ancient Urban Ruins and Vanilla Landmarks Expanded - Optional (landmark and structure compatibility)
- Odyssey DLC - Optional (for Odyssey-specific world hooks)
Development Notes
- This module is in open beta. Balance passes, naming cleanup, and compatibility refinements are still ongoing, so targeted feedback is useful.
- This mod is part of the Fallout Immersion Project (FIP) - a complete modular overhaul inspired by Fallout's lore. FIP is not affiliated with the Fallout Collaboration Project (FCP), but it is designed to complement FCP and other Fallout-friendly RimWorld mods. You can also find the project in the FCP Discord's FIP channel: Join here[discordapp.com]
Fallout Immersion Project Modules
- Fallout Immersion Project - Donaustahl (Vanilla cleanup and immersion remover)
- Fallout Immersion Project - H&H Tools (Core framework, factions, and naming)
- Fallout Immersion Project - West Tek (Biotech genetics and xenotypes)
- Fallout Immersion Project - RobCo (Biotech robotics and mechanitors)
- Fallout Immersion Project - Greenway (Ideology, dryads, and gauranlen retheme)
- Fallout Immersion Project - Whitespring (Royalty empire conversion)
- Fallout Immersion Project - Hubris (Royalty anima and occultism)
- Fallout Immersion Project - Repconn (Odyssey gravships and aerospace)
- Fallout Immersion Project - Poseidon (Vanilla Expanded energy and technology compatches)
- Fallout Immersion Project - Lucky 38 (Hospitality compatibility and casino flavor)
Credits
- All placeholder textures and sprites created by MisterHouse.
- All professional art was made by the amazing Okagrim and Farxmai.
- Special thanks to all the amazing supporters on Ko-fi - they are the ones who fund the commissions.
- And of course, for helping out with coding and playtesting, huge shoutout to Alvalor.
Support the Project

