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Base Invasion - Siege Core
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Base Invasion - Siege Core

Java mod listed for Minecraft 1.20–1.21. Download on the author's site.

by MKI96 · on CurseForge

Defend your base with the Siege Core against waves of monsters, boss battles, and air strikes. Collect rewards, repair the Core, play as a team, and…

⬇ Download on CurseForge
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⚔️ Siege Core: Base Invasions ⚔️

Defend your base. Survive the waves. Protect the Core.
Siege Core: Base Invasions turns your Minecraft base into the target of dangerous monster invasions, boss waves, elite enemies, traps, defense blocks, special events and long-term progression.


🏰 What is Siege Core?

Siege Core: Base Invasions adds a full base-defense system to Minecraft. Craft and place a powerful Siege Core, build defenses around it, invite your team and prepare for enemy waves.

Your base generates Threat Points. Once the threat level is full, an invasion is prepared. Enemies will attack your base and try to destroy your Siege Core.

Survive all waves to progress.
If the Core falls, the invasion is lost.


💬​ Informations and Support

Would you like to be the first to hear about updates or share new ideas? Then why not join our Discord server so we can communicate more quickly?


✨ Main Features


📖 Siege Codex

The mod includes a custom Siege Codex. Players receive it once when joining or creating a world.

Recipes are displayed with item icons instead of plain text.


💎 Siege Tokens & Token Upgrades

Successful invasions reward Siege Tokens. Spend them in the Core UI to upgrade your base or buy defense blocks.

Upgrade success and error messages use clean toast-style notifications.


🛡️ Defense Blocks

🪵 Siege Barricade

A defensive blockade used to slow down enemies, create chokepoints and protect the Core. Siege mobs can attack barricades, giving players time to react.

🩸 Spike Trap

Damages Siege mobs that step on or move across it.

🐌 Slow Trap

Slows Siege mobs and helps control enemy movement.

🔥 Flame Trap

Deals area damage to Siege mobs and is useful against groups.

❄️ Frost Totem

Slows nearby Siege mobs in a radius.

💚 Repair Pylon

Supports your defense by helping repair the Core during active invasions.


⚠️ Threat System

Your base builds up Threat through time, activity, monster kills and ore mining.

Default invasion threshold: 3500 Threat Points


🌊 Stages, Waves & Wave Preview

Stage Waves
Stage 1 3 Waves
Stage 2 6 Waves
Stage 3 9 Waves
Stage 4 12 Waves
Stage 5 15 Waves

The HUD and Core UI can show Wave Preview information such as enemy count, boss wave status, event chance and possible Infinity Mode combinations.


📈 Core Level / Base Level

Completing waves and invasions grants Core XP. Higher Core Levels improve long-term base strength, durability and reward scaling.


♾️ Infinity Mode


🌘 Invasion Events

Event Effect
🌕 Blood Moon More dangerous enemy pressure
🌫️ Dark Fog Darker and more chaotic combat
🦇 Sky Attack More aerial pressure
🐗 Siege Breaker More Core-focused pressure
🏹 Arrow Rain Ranged pressure and disruption
⭐ Elite Surge Increased Elite Mob chance
👑 Boss Rush Special boss wave with additional bosses

👹 Enemies

Siege mobs scale with stage, Infinity Level, active events, elite modifiers and boss waves. Siege mobs do not burn in daylight during active invasions.


🧭 Smart Core Access Protection

The Core must remain accessible. Siege Core uses a smart path check to prevent players from sealing the Core completely.


🖥️ Custom Core UI & HUD

Right-click the Siege Core to open the custom Core UI.

/siege hud on
/siege hud off

👥 Team System

/siege team
/siege team add <player>
/siege team remove <player>
/siege team promote <player>
/siege team demote <player>
/siege accept

🧩 Custom Mob Support

Server owners and modpack creators can add custom mobs through config with weights, wave requirements, scaling multipliers, elite flags, boss behavior and allowed events.


🛡️ Offline Protection & Session Recovery


🔔 Update Checker

The mod includes an optional update checker. If no internet connection is available or the check fails, no warning is shown.


🌍 Languages


📦 Installation

  1. Install Fabric Loader.
  2. Install Fabric API.
  3. Place the mod file into your mods folder.
  4. Start Minecraft.
  5. Craft and place a Siege Core.
  6. Build your defenses and prepare for invasions.

Because the mod includes a custom UI and HUD, it must be installed on both the server and the client.


💬 Why Siege Core?

Siege Core is designed to make Minecraft bases matter again. Instead of building a perfectly safe home, your base becomes something you must actively defend.

Build. Defend. Survive. Upgrade. Repeat.

Quick facts

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

Base Invasion - Siege Core is a free Minecraft Java mod. Compatible with Minecraft 1.20.1, 1.21.1, 1.21.11. Downloaded 976 times (via CurseForge). Download it and open it directly in the game.

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