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mod

Jeff's ISS AddonsMinecraft mod

An Iron's Spells 'n Spellbooks Addon.

client and server
Latest version
1.6.0
Minecraft
no version declared
Java
follows the game
Loaders
none declared
Licence
LicenseRef-All-Rights-Reserved
Downloads
608
Updated
11 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Jeff's ISS Addons servers

One click and Jeff's ISS Addons is installed with the right loader, on hardware built for it.

  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Download

From Jeff's ISS Addons’s own host. Nothing is re-hosted here.

Most recently published release

1.6.0release15 Dec 2025

jeffsissaddons-1.6.0.jar · 47 KB · for 1.21.1 · NeoForge

Download this release
f83bb231379c…
Older versions6
  • 1.5.08 Dec 20251.21.145 KB45 downloadsa3374b3ad469…Get
  • 1.4.028 Nov 20251.21.135 KB46 downloads2b4a659840ac…Get
  • 1.3.027 Nov 20251.21.131 KB24 downloads09117505ab8d…Get
  • 1.2.025 Nov 20251.21.122 KB24 downloadscb5f3b08d118…Get
  • 1.1.024 Nov 20251.21.17 KB23 downloads8283db4f7d8f…Get
  • 1.0.024 Nov 20251.21.15 KB23 downloadsb014684bbf19…Get

Frequently asked

Do I need to install Jeff's ISS Addons on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

What licence is Jeff's ISS Addons under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Jeff's ISS Addons?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Jeff's ISS Addons safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Which Minecraft versions does Jeff's ISS Addons work on?

The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Minecraft.

Details from Modrinth, where the author last updated it on 15 Dec 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

Not indexed yet. Score 46 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .