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Modular Gel

by ThermaDev

Modular Gel is a Forge mod for 1.20.1 that adds gel blocks inspired by the mobility gels in Portal 2, aimed at map making.

ForgeClient and serverMIT License1.20.1

What it does

Each gel type has its own behavior. Bouncy Gel launches entities upward and prevents fall damage. Slippery Gel increases speed and decreases friction, while Sticky Gel slows movement and reduces jump height. Ice block, Honey Bottle and Glowing Gel variants round out the basic set, and Glowing Gel uses an emissive texture to stand out in dark areas.

Luminous Gel emits light, Weighted Gel falls like sand, and Acidic Gel inflicts an acid burn on contact. The mod is intended for building Portal-style test chambers, minigames and parkour maps. Gels are crafted with Gelworker's Toolbox, and the Placer Tool and Modifier Tool apply and pull modifiers and dyes, with the Gel Crucible used for the rest.

The mod is released under the MIT License and is not open source. It runs on Forge for 1.20.1 only and is client and server, so the server and every player need it. Create is an optional dependency, and the author recommends pairing Modular Gel with Create Immersive Portal Gun.

Key features

  1. Bouncy and slippery gels

    Bouncy Gel launches entities upward and blocks fall damage, while Slippery Gel raises speed and lowers friction.

  2. Sticky and weighted gels

    Sticky Gel reduces jump height and speed, and Weighted Gel falls like sand when unsupported.

  3. Light and hazard gels

    Glowing Gel and Luminous Gel provide light, and Acidic Gel inflicts an acid burn on contact.

  4. Gel tools and crucible

    The Placer Tool and Modifier Tool handle applying modifiers and dyes, and the Gel Crucible processes gel recipes.

Compatibility

Latest build for each game version and loader.

1.20.11.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Optional 1

CreateAesthetic Technology that empowers the Player
Optional

Use cases

Test chambers and parkour

Gels with different friction, bounce and light values suit puzzle rooms and jump courses built in a map editor.

Who it’s for: Map makers and minigame builders on Forge 1.20.1 who want gel mechanics similar to those in Portal 2.

Questions

Does Modular Gel need Create?

No. Create is listed as an optional dependency, so the mod runs without it, though the author recommends it for the Portal Gun pairing.

Which game versions does Modular Gel support?

The mod has a single version, 1.20.1, with the latest Forge file 1.0 published on 2025-05-31.

Does the server need Modular Gel?

Yes. Installation covers the server and each player's game.

In the catalog

Modular Gel is one of 2,135 Minigame mods on ModsFinder, and one of 886 Minigame mods for Forge. 34,764 mods support Minecraft 1.20.1.

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What the author says

Modular Gel is a simple mod inspired by the mobility gels from Portal 2, intended to be used for building Portal-style test chambers, minigames, parkour maps and whatnot. Although you can use the mod on it's own, I highly recommend pairing it with Create or Immersive Portal Gun. To create Gels, use the Gelworker's…
ThermaDev, on the Modrinth page

Official listing

Owner
ThermaDev
Published
2025-05-31
Updated on Modrinth
2025-05-31
Facts verified
2026-10-15

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