Muttnes's Sunlight Weakness
Java mod listed for Minecraft 1.20. Download on the author's site.
⬇ Download on CurseForge🌞 Muttnes Sunlight Weakness
🔍 About
Many mods make Minecraft significantly harder, increasing the challenge but sometimes making daytime survival frustratingly difficult. Muttnes Sunlight Weakness helps balance heavily modded experiences by weakening hostile mobs during the day, while still keeping nights intense and dangerous.
This mod is perfect for players who enjoy hardcore survival but want more control over the difficulty curve. Pair it with Mob Sunscreen, Time Control, or any difficulty-enhancing mods to fine-tune your adventure. It will work perfectly in any zombie apocalypse themed modpack!
🎥 Showcase
🌞 Daytime – Mobs are weaker and slower, making them easier to manage. However, in large groups, they can still pose a threat!

🌙 Nighttime – Mobs regain their full strength and speed, making the night much more dangerous.

⚠️ Requirements
- Can be installed server-side only. Works without issues if installed on the client-side as well.
✨ Features
- ✅ Hostile mobs deal reduced damage during daytime
- ✅ Hostile mobs move slower during daytime
- ✅ Full strength and speed return at night
- ✅ Fully configurable damage and movement reduction
- ✅ Supports modded mobs
- ✅ Include or exclude specific entities through config
- ✅ Server-side compatible
🔧 Configuration
A TOML config file is generated automatically.
You can configure:
- damage reduction
- movement speed reduction
- included mods
- included mobs
- excluded mobs
Example
damageReduction = 0.5→ mobs deal 50% less damagespeedReduction = 0.30→ mobs move 30% slower
🎯 Recommended Mods
For the best experience, consider using Muttnes Sunlight Weakness alongside:
- 🛡️ Mob Sunscreen – Prevents mobs from burning in sunlight.
- ⏳ Time Control – Adjusts the length of day and night cycles.
- 💀 Difficulty-enhancing mods – Makes nighttime survival even more challenging.
🛠️ Support
💬 Found a bug? Have suggestions? Open an issue on the GitHub repository!
🤝 Any feedback is greatly appreciated!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Muttnes's Sunlight Weakness is a free Minecraft Java mod. Compatible with Minecraft 1.20.1. Downloaded 680 times (via CurseForge). Download it and open it directly in the game.