Onslaught [outdated/momentarily discontinued]
Minecraft Java mod. Downloads from the MC Java Mods app on Android.
Inspired by Terraria, Onslaught is an extensive invasion mod with a visible progress bar, per-dimension invasions, and more. Made for Rebirth of the Night…
⬇ Download on CurseForgeNot recommended for use
Mod is highly bugged and there are no immediate plans to update it or fix it.
Documentation
Requires Athenaeum!
Onslaught is a commissioned mod by codetaylor made for the Rebirth of the Night modpack. We'll adjust and add more to this description overtime, but a quick overview is that it is an extensive invasion mod made to allow for as much customization as possible. Inspired by Terraria invasions, there is a visible progress bar and mobs defined in the config will spawn and seek the player out until they are killed whenever an invasion night occurs. The invasion ends after all mobs are killed.
Overview
- Per-world
- Mobs seek player
- Defined in json templates in groups of waves
- Time delayed, configurable
- When wave is dead, spawn next wave faster, after N ticks, configurable
- Server timed, every M to N days
- Occur only at night
- Have a unique configurable announcement message the morning prior
- Visible invasion progress bar
- Ends after invasion force is dead
- Dimension whitelist / blacklist
- Execute commands during invasion at given completion stages
- Players can't sleep during invasion
- Players can't change dimensions during an invasion
Invasion mobs
- Allow spawning mobs with NBT data
- Mobs that despawn due to chunk unloading are respawned
- Can be json configured to spawn with potion effects
- Can be json configured to drop additional bonus loot from external, json defined loot tables
- Can be json configured to remain, die or simply disappear after sunrise
- Can be NBT configured to have these additional AI roles:
- ai_antiair: gives a mob the ability to magically pull them down when they see them, pretty mean
- ai_mining: gives a mob the ability to dig towards their target, only use for mobs the size of a zombie
- ai_explodeonstuck: gives a mob the ability to explode once they cant get any closer to their target
- ai_counterattack: gives a mob the ability to counter attack with a leap towards the target after they're hit
- ai_lunge: gives a mob the ability to move faster towards the target when they are close
- ai_attack_melee: gives a mob the ability to chase and hurt a target, use on mobs that didn't have a melee attack like passive mobs
Spawning system
- Prioritize dark locations far from player
- Spawn at approximately the same Y level as player
- Special "shadow spawn" logic if no valid spawn locations are found
- Forces mobs to spawn in lit areas
- Generates particles at the shadow spawn locations
- Spawns are delayed
- If spawn location becomes blocked, trigger fake explosion and clear a few blocks
- Shadow spawn locations apply configurable potion effect to nearby players
- Gamestage support
- Select invasion based on player Gamestage
- Exclude Gamestage, ie. select this invasion if player stage1, but not stage9001
Commands
- Command to force start invasion
Documentation
- Documentation of the .json syntax
- Documentation of the commands
- Documentation of the custom AI NBT syntax
- Edition: Minecraft Java
- File type: .jar
- 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 onslaught-1.12.2-1.2.2.jar — drop this file into the mods folder
- Download size: 272 KB
- Download link checked 14 Oct 2026 — working
These come from our own check of the pack file, not from the source page.
