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Simplexium

All-in-one Minecraft expansion: powerful automation, smart interactions, mining mechanics, and visual tweaks.
by dimayastrebov
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3,602 downloads
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Updated Jul 6, 2026
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Cosmetic Utility & QoL

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.

[NeoForge 1.21.11] v1.10-rc1
MC Client, NeoForge, Server, 1.21.11
Release 2026-03-20 Get
[NeoForge 1.21.11] v1.5.0 Beta
MC Client, NeoForge, Server, 1.21.11
Beta 2026-01-20 Get

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