HellGate
by Gvoper
HellGate is a server-side mod that makes portals to the Nether a lasting risk, since a lit portal later releases hostile waves of Nether creatures.
What it does
Once a Nether portal is lit, a timer starts. Five minutes after the portal deactivates, portal hell triggers and Nether mobs spawn through it. Each wave brings two or three mobs, chosen at random from a weighted spawn table that the server owner can set, so the chance of each creature can be tuned. The timer length is configurable in ticks, with a default of five minutes.
After a wave, the portal breaks itself, and this auto-deactivation can be switched off. Portals are stored on disk, so they survive server restarts. A dimension whitelist limits the mod to chosen dimensions. Portals in empty dimensions are left alone, and a five-second grace period applies when players are present. The mod requires Architectury API and Fabric API, and is published for Fabric, Forge and NeoForge, with files for 1.20.1 and 1.21.1 released under All rights reserved.
Key features
Timed portal waves
A lit portal spawns a wave of Nether creatures after a configurable delay, with a default of five minutes.
Weighted mob spawns
Server owners set custom spawn weights, so some mobs appear more often than others in each wave.
Randomized wave size
Each wave contains two or three mobs, which makes the count unpredictable from one portal to the next.
Portal persistence and limits
Portal state is saved to disk, and a dimension whitelist controls which dimensions the mod affects.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Hardcore-style servers
Server owners who want the Overworld to feel more dangerous can keep portals open as an ongoing threat.
Portal management
Players who leave a Nether portal active accept that it may release a wave later, so they must decide whether to keep it.
Who it’s for: Server owners running survival or RPG servers who want Nether portals to carry lasting consequences. The mod is server-side only, so players join without installing it.
How it compares
Create: Portal Integration is also available for Fabric, Forge and NeoForge across 1.20.1 – 1.21.1 and is server-side only, but it is not open source. Nether Portal Boom targets Fabric and Quilt for 1.19.1 – 1.21.1, is server-side only and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| HellGate | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-06-09 |
| Create: Portal Integration | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-07-24 |
| Nether Portal Boom | Fabric and Quilt | 1.19.1 – 1.21.1 | Server-side only | 2024-08-24 |
Questions
Does HellGate need Fabric API?
Which loaders and versions does HellGate support?
Does HellGate need to be installed on clients?
In the catalog
HellGate is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from Gvoper
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What the author says
A portal left unattended is a portal that invites trouble. Hellgate adds consequences to leaving nether portals active. Every lit portal will eventually spawn a wave of dangerous mobs from the Nether and then deactivate itself. No more free, permanent highways between dimensions — firesteel now has real value, and…
Official listing
- Modrinth page
- modrinth.com/mod/hellgate
- Owner
- Gvoper
- Published
- 2025-06-02
- Updated on Modrinth
- 2026-06-09
- Facts verified
- 2026-10-15