Wither Dimension Filter (Forge)

A Minecraft Forge mod that restricts Wither spawning exclusively to the Nether (the Underworld).

This add-on solves the problem of accidentally summoning the Wither in the Overworld or the End — now the guardian cannot activate anywhere except the intended dimension.

📷 Illustration

✅ How this mod is better than alternatives

Standard options block the actual Wither spawning, but the summoning structure is still destroyed — Soul Sand blocks are broken down and Wither Skeleton skulls are consumed. A waste of valuable assets!

Wither Dimension Filter works smarter: it blocks unnecessary dimension checks, not the summoning itself: the structure remains untouched, skulls and blocks stay in place. No losses!

Important: the mod is not planned for backporting to older Minecraft versions, only current releases.