Yukichigai Unofficial Patch - YUP
newvegas — Mods & Enhancements
YUP is the definitive bug fix compilation for Fallout: New Vegas and all its DLC, merging hundreds of fixes into a single ESM. It's the only pure bug fix mod on the Nexus, adding no new features or balance changes. Essential for any modded playthrough, with over 104k endorsements and 5.3 million downloads.
📦 Full mod page on discovermods
Downloads, ratings, compatibility info, installation guides, and user reviews.
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Bug FixesExample
Downloads: 5,305,207💡 Notes
By Yukichigai -maintained by sandbox
🎯 Tips & Tricks
Place YUP at the top of your load order, right after the official DLC, to ensure it patches base game records first.
If you use a mod manager like Vortex or MO2, let it handle the ESM—just enable it and let LOOT sort your load order.
Check the mod's compatibility notes for patches if you're using popular overhauls like Project Nevada or JSawyer—some need specific patches.
🔧 Troubleshooting
Mod conflicts
Check load order. Disable conflicting mods one by one.
⚠️ Common Mistakes
- Installing without checking requirements
👍 Pros
- Community-approved with over 104k endorsements—this is the gold standard for FNV bug fixes.
- Pure bug fixes only, so it won't mess with your gameplay or balance—just makes the game more stable.
- Actively maintained, last updated May 2026, so it's still relevant for current mod setups.
👎 Cons
- No new content or restored features—if you want that, look elsewhere.
- Requires a clean install order and compatibility with other mods; not a plug-and-play for everyone.
- As a single ESM, it can conflict with mods that alter the same records—check compatibility patches.