Event Horizon: Chaos Mod
by MyNameIsA3OT
Event Horizon: Chaos Mod triggers a random event every 60 seconds, changing how the game plays until the event ends.
What it does
Each event lasts 2 minutes by default, and the duration can be changed in the settings. The mod includes more than 70 unique events, among them meteor showers, gravity shifts and mob spawns, while some events are only harmless visual effects that cover the whole world. Events can be disabled one by one, so a player or server owner can keep the ones they like and remove the rest.
The mod is installed on NeoForge for 1.21.1 and needs to be on both the server and the client, since it is client and server. It ships in English and Russian out of the box. Its settings are reached from the Mods list in the Esc menu, under Event Horizon, and changes apply instantly, though a world reload is required for some of them.
The source code is public under the MIT License, and an issue tracker is available. Files for this mod exist only for NeoForge 1.21.1, with version 0.5.2+1.21.1 as the latest file, published on 2026-01-04.
Key features
Random event every 60 seconds
A new event is picked at random each minute, so the world changes without any command from players.
More than 70 unique events
Events include meteor showers, gravity shifts and extra mob spawns, with a range of effects from mild to disruptive.
Harmless visual catastrophes
Some events only alter the sky and surroundings, leaving gameplay untouched while still looking dramatic.
Configurable event list
Disliked events can be turned off and the duration of each event can be adjusted in the settings.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Chaotic survival runs
Players who want unpredictable worlds can let the random events shape each session.
Server events
Server owners can keep the events they choose and disable the ones that do not suit their players.
Who it’s for: Players looking for unpredictable gameplay, and server owners who want a configurable random event system on NeoForge 1.21.1.
How it compares
Chaos X is a NeoForge mod for 1.21, with a client and server environment, and is not open source, carrying an All rights reserved license. Risky Block is a NeoForge mod for 1.21.11, also client and server, released under the MIT License. Event Horizon is the only one of the three built for 1.21.1 under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Event Horizon: Chaos Mod | NeoForge | 1.21.1 | Client and server | 2026-01-04 |
| Chaos X | NeoForge | 1.21 | Client and server | 2026-01-31 |
| Risky Block | NeoForge | 1.21.11 | Client and server | 2026-07-07 |
Questions
Which NeoForge version does Event Horizon need?
Does the server need Event Horizon too?
Can the random events be turned off?
In the catalog
Event Horizon: Chaos Mod is one of 2,135 Minigame mods on ModsFinder, and one of 712 Minigame mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
🎲 Random events every 60 seconds | 70+ unique effects | Fully customizable Event Horizon is a mod that triggers a completely random gameplay-altering event every 60 seconds — from harmless visual quirks to full-blown global catastrophes!
Official listing
- Modrinth page
- modrinth.com/mod/event-horizon-chaos-mod
- Owner
- MyNameIsA3OT
- Published
- 2026-01-04
- Updated on Modrinth
- 2026-01-04
- Facts verified
- 2026-10-15