FlexiblePortals
by crdtrd
FlexiblePortals lets nether and end portals take other frame blocks, a larger maximum size and a set of fixed rules for how they behave.
What it does
Crying obsidian counts as a legal frame block for building nether portals. End portal frames can be harvested with a silk touch pickaxe, with diamond being the better tool. Nether portals are explosion proof, and fluid source blocks break portals that they touch. The maximum portal size is raised to 4096 blocks, and the shape a portal may take is adjustable.
The mod is server-side only: only the server needs it, and players join without installing anything. It requires Fabric API and is compatible with vanilla clients. Builds are published for Fabric for game versions 1.21.8, 1.21.9 and 1.21.10, with 1.0.0+1.21.10 as the latest file. The code is released under the MIT License, so it is open source with public source code and an issue tracker.
Key features
Crying obsidian frames
Crying obsidian is accepted as a valid frame block for building nether portals, alongside the vanilla frame material.
Frame blocks inside portals
A frame block can also sit inside the portal opening rather than only along its border, which changes the shape a builder can use.
Harvestable end portal frames
End portal frames can be collected with a silk touch pickaxe, and a diamond pickaxe works better.
Protected nether portals
Nether portals resist explosions, and fluid source blocks that touch a portal break it.
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 1
Use cases
Who it’s for: Server owners and builders who want portals that go beyond the vanilla frame rules and size limit. Players on a vanilla client can join a server that runs the mod.
How it compares
Custom End Portal is server-side only, open source under the CC0 1.0 Universal license and published for 1.21 – 1.21.5, so it covers a different range of versions. Crying Obsidian Portals is client and server, open source under the MIT License and published for Fabric and Quilt for 1.21 – 1.21.1, so it needs both sides to run. ObsiCry is server-side only, open source under the MIT License and published for 1.21.5 – 26.2, which overlaps only with the newest FlexiblePortals builds.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| FlexiblePortals | Fabric | 1.21.8 – 1.21.10 | Server-side only | 2025-10-15 |
| Custom End Portal | Fabric | 1.21 – 1.21.5 | Server-side only | 2025-04-13 |
| Crying Obsidian Portals | Fabric and Quilt | 1.21 – 1.21.1 | Client and server | 2024-09-25 |
| ObsiCry | Fabric | 1.21.5 – 26.2 | Server-side only | 2026-06-16 |
Questions
Does FlexiblePortals need Fabric API?
Do players need to install FlexiblePortals?
Which game versions does FlexiblePortals support?
Are the frame rules configurable?
In the catalog
FlexiblePortals is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 15,569 mods support Minecraft 1.21.10.
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Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/flexibleportals
- Owner
- crdtrd
- Published
- 2025-09-17
- Updated on Modrinth
- 2025-10-15
- Facts verified
- 2026-10-15