mod
Iron's Spellbooks TweaksMinecraft mod for 1.21.1
Modpack config tweaks for Iron's Spells 'n Spellbooks. TOML options for mana, cooldowns, spell power and buff durations, dimension blocks, rarity gating, inscriptions, black hole resistance. Per-world overrides and datapack unlocks. Soft dep, no mixins.
- Latest version
- Iron's Spellbooks Tweaks 1.5.0 Forge (1.20.1)
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- Forge, NeoForge
- Licence
- not stated
- Downloads
- 983.3k
- Updated
- 5 mo ago
- Available on
- CurseForge
Minecraft versions
Every version Iron's Spellbooks Tweaks declares support for, newest first, with the Java runtime that version needs.
Download
From Iron's Spellbooks Tweaks’s own host. Nothing is re-hosted here.
For Minecraft 1.21.1
Choose the loader you use before downloading.
- Get NeoForge
NeoForge
Iron's Spellbooks Tweaks 1.5.0 NeoForge (1.21.1) · 6 Jun 2026 · irons_spellbooks_tweaks-1.5.0.jar
Most recently published release
irons_spellbooks_tweaks-1.5.0.jar · 84 KB · for 1.20.1 · Forge
38a2291bef81…Older versions13Hide older versions
- Iron's Spellbooks Tweaks 1.5.0 NeoForge (1.21.1)6 Jun 20261.21.178 KB
3c99ddd04031…Get - Iron's Spellbooks Tweaks 1.4.1 NeoForge (1.21.1)30 May 20261.21.166 KB6 downloads
bb777bb676ef…Get - Iron's Spellbooks Tweaks 1.4.1 (1.20.1)30 May 20261.20.172 KB
8f153dea6fff…Get - Iron's Spellbooks Tweaks 1.4.0 NeoForge (1.21.1)28 May 20261.21.166 KB40 downloads
19035d82cf0d…Get - Iron's Spellbooks Tweaks 1.4.0 (1.20.1)28 May 20261.20.172 KB39 downloads
9469ed55e2a6…Get - Iron's Spellbooks Tweaks 1.3.0 NeoForge (1.21.1)11 May 20261.21.160 KB974 downloads
b9c1fe532e61…Get - Iron's Spellbooks Tweaks 1.3.1 (1.20.1)11 May 20261.20.166 KB13 downloads
9a351af9fe3d…Get - Iron's Spellbooks Tweaks 1.3.0 (1.20.1)10 May 20261.20.166 KB23 downloads
3ab8bc2c9388…Get - Iron's Spellbooks Tweaks 1.2.1 (1.20.1)5 May 20261.20.165 KB
7ba5b3f2e2d4…Get - Iron's Spellbooks Tweaks 1.2.0 (1.20.1)5 May 20261.20.165 KB
ca4e63f62f2e…Get - Iron's Spellbooks Tweaks 1.1.1 (1.20.1)1 May 20261.20.158 KB
183506ed27ab…Get - Iron's Spellbooks Tweaks 1.1.0 (1.20.1)1 May 20261.20.157 KB
d92b6af0eff2…Get - Iron's Spellbooks Tweaks 1.0.0 (1.20.1)30 Apr 20261.20.116 KB1 download
1b7f0c05da52…Get
Frequently asked
Does Iron's Spellbooks Tweaks work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Iron's Spellbooks Tweaks declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Iron's Spellbooks Tweaks support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Which platform or loader does Iron's Spellbooks Tweaks support?
Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Iron's Spellbooks Tweaks?
Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
How do I install Iron's Spellbooks Tweaks?
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 Iron's Spellbooks Tweaks safely?
Start with the author's page on CurseForge, 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.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .