ModsFinder

Celeritas/Nothirium Extra

by pepe_yu

Celeritas Extra is a Forge add-on for the Celeritas rendering mod, adding quality-of-life optimization options on the client for Minecraft 1.12.2.

ForgeClient-side onlyGNU Lesser General Public License v3.0 onlyOpen source1.12.2

What it does

Celeritas Extra runs only on the client, so a server does not need it and players join without installing it. It is built to run alongside Cleanroom Loader and works as an unofficial addon to the Celeritas, Actinium and Nothirium client mods. Its configuration covers a broad set of optimization switches, comparable in purpose to OptiFine or Angelica, which adjust how the game draws the world.

Two of its options toggle texture animations and water animations, so a player can turn those effects off when they cost frame rate. Particle options depend on which other mods are installed and connected to the server, so the list of available settings can change between setups. The code is released under the GNU Lesser General Public License v3.0 only and is open source, and public links to the source and the issue tracker are available.

Key features

  1. Texture animation toggle

    An option turns animated textures on or off, reducing per-frame work for players who prefer static textures.

  2. Water animation toggle

    A separate switch controls animated water, so the effect can be disabled without changing other visuals.

  3. Particle dimension options

    Particle settings vary with the installed mods and the server connection, so the available choices depend on the setup.

  4. Broad optimization settings

    A wide set of client rendering switches adds options similar in purpose to those found in OptiFine and Angelica.

Compatibility

Latest build for each game version and loader.

1.12.20.9.3
ReleaseBetaAlphaNot available

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

Questions

Does Celeritas Extra need to be installed on the server?

No. Celeritas Extra is client-side only, so only the player's game needs it and a server runs without it.

Which Celeritas components does Celeritas Extra work with?

It works with the unofficial client-side addon Celeritas, Actinium and Nothirium, and it is built to run alongside Cleanroom Loader.

Does Celeritas Extra work on versions other than 1.12.2?

No. The only Forge file is for 1.12.2, with 0.9.3 as the latest file, published on 2026-10-14.

In the catalog

Celeritas/Nothirium Extra is one of 7,555 Cursed mods on ModsFinder, and one of 3,426 Cursed mods for Forge. 2,920 mods support Minecraft 1.12.2.

Cursed mods7,555Forge modsMods for 1.12.22,920

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What the author says

Celeritas Extra is an unofficial client-side add-on for Celeritas, built to run on Cleanroom Loader. It provides a wide range of quality-of-life and optimization options, similar to OptiFine and Angelica. The following settings and features are added by Celeritas Extra. Individual particle and dimension options vary…
pepe_yu, on the Modrinth page

Official listing

Owner
pepe_yu
Published
2026-02-01
Updated on Modrinth
2026-10-14
Facts verified
2026-10-15

Tags

CursedUtility
Open on ModrinthCompare