Impending Doom (Alien invasion)
Impending Doom is a Forge alien invasion mod for 1.20.1 in which invaders attack the player's base in waves of varying sizes and types.
What it does
The mod sends alien invaders against the player's settlements, with enemies of many sizes and types that can destroy an unprepared base. Its enemy roster ranges from common aliens and elites up to a single boss, and it adds invader carriers, spawners, infection mechanics, army soldiers and invader structures.
Players are advised to stay alert, since invasions can arrive without warning and a base hit by explosions and infections can be left badly damaged. The mod suggests that players drift around the world to find and stop the invaders rather than waiting at a fixed spot. It needs Geckolib and Curios, and it is published for Forge only.
A server running it needs every connecting player to have it too. Files cover 1.20.1 alone, with 1.2 as the latest Forge build, released on 2025-12-23 after a first release on 2025-12-02. The code is not open source and is licensed as All rights reserved.
Key features
Invader waves
Invaders of many sizes attack the player's base, from small raiders to a boss-level enemy.
Enemy roster
The roster includes aliens, elites, minibosses and a boss, plus invader carriers and spawners.
Infection and explosions
Infections and explosive attacks spread through the world and can cause heavy damage to structures.
Weapons and armour
Weapons and armour are added to help the player fight the invaders and their army soldiers.
Creepy ambience and music
The mod adds creepy ambient sound, three music discs, building blocks and enchantments.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Surviving on a single base
A player who settles in one place must prepare defences, since invasions can destroy it entirely.
Exploring the world
Drifting across the map lets players find invader structures and spawners before they reach the base.
Who it’s for: Players who want a survival challenge built around recurring alien attacks, and server owners running a Forge 1.20.1 world with the required dependencies installed.
How it compares
Alien Parasite Infection is a Forge mod for 1.20.1 under All rights reserved, not open source, and it also runs on client and server. Aliens & Time Travel is a Forge mod for 1.20.1 under the MIT License, and it runs on client and server too. Animal invaders (brainrot) is a Forge mod for 1.20.1 under the MIT License, and it is open source with the same client and server environment.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Impending Doom (Alien invasion) | Forge | 1.20.1 | Client and server | 2025-12-23 |
| Alien Parasite Infection | Forge | 1.20.1 | Client and server | 2025-08-23 |
| Aliens & Time Travel | Forge | 1.20.1 | Client and server | 2026-03-30 |
| Animal invaders (brainrot) | Forge | 1.20.1 | Client and server | 2025-05-14 |
Questions
Which loader does Impending Doom need?
Does Impending Doom have to be installed on the server?
What does Impending Doom require?
In the catalog
Impending Doom (Alien invasion) is one of 8,499 Technology mods on ModsFinder, and one of 4,122 Technology mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from DualFusion Entertainment Studios
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What the author says
Impending doom is an alien invasion mod, your world will be attacked by a variety of invaders in a variety of sizes. Always be on the lookout because they are not easy to deal with. This mod is very destructive with explosions and infections. It is not recommended to settle somewhere with a nice fully built base just…
Official listing
- Modrinth page
- modrinth.com/mod/impending-doom-alien-invasion
- Owner
- DualFusion Entertainment Studios
- Published
- 2025-12-02
- Updated on Modrinth
- 2025-12-23
- Facts verified
- 2026-10-15