Simplexium
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Simplexium is an all-in-one expansion that goes far beyond simple Quality of Life. It combines powerful automation, advanced world interactions, dynamic farming, and even visual camera filters into a single, highly configurable mod.
✨ Features
| Feature | Description |
|---|---|
| ⛏️ Vein Mining | Break one ore block to harvest the entire vein. Works with modded ores. |
| 🪓 Tree Chopping | Fell whole trees. Now with configurable Leaf Decay modes (Instant or Fast Decay). |
| ⚔️ Auto-Tool & Weapon | Automatically swaps to the best tool or weapon. Swaps back after use. |
| 📦 Auto-Refill | Refills hotbar stacks from inventory (and Shulker Boxes!) when they run out. |
| 🍗 Auto-Eat | Automatically eats the best food when hungry or healing. Smart and configurable. |
| 🛌 Sleep Heal | Restores a percentage of missing health when you wake up. Because sleep is healthy! |
| 📸 Camera Mode | Press F12 for cinematic filters (Warm, Cold, Notch, etc.) and specialized screenshots. |
| 🌾 Easy Harvest | Right-click to harvest and replant. Use a Hoe for 3x3 area harvesting and drop bonuses (hand harvesting gives a 25% penalty!). |
| 🚪 Smart Doors | Opens double doors, trapdoors, and fence gates simultaneously. |
| 🛡️ Grief Protection | Optional tweaks: Anti-Trample (crops) and Anti-Enderman Griefing. |
| 🪜 Fast Ladders | Look up to climb faster, look down to slide. |
| 🧘 Sit & Lie | Press X to sit or Z to lie down. Lying down allows crawling through 1x1 gaps. |
| 🖐️ Item Throw | Hold Drop key (Q) to charge a throw. Throws items farther based on charge. |
| 🪵 Anti-Strip | Prevents accidental log stripping with axes. Hold Shift to strip. |
| ⚙️ In-game Config | Tweak all mod settings directly from the in-game mods menu. No restarts required! |
📺 Feature Showcase
⚙️ Configuration
You can tweak almost everything directly in the game! Just go to Mods -> Simplexium -> Config. Alternatively, you can edit the simplexium-common.toml file.
Don't like a specific feature? You can disable Vein Mining, Auto-Swap, Drop Penalties, or anything else individually.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.21.10, 1.21.4
- 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.
- Ships as simplexium-neoforge-1.5.0+1.21.11+beta.jar — drop this file into the mods folder
- Download size: 173 KB
- Download link checked 2 Oct 2026 — working
These come from our own check of the pack file, not from the source page.