Ultima Failsafe System

Name: Ultima Failsafe System
Author: ashleykarmic

by ashleykarmic

An Optimization mod for Minecraft Java Edition on NeoForge. Game version 1.21.1.

NeoForgeClient or server, optionalMIT License1.21.1

Gallery

Icon · We cant really show off a gallery for this type of mod, max we could do would be screenshots of a crash we prevented lol

Compatibility

Latest build for each game version and loader.

1.21.10.04

ReleaseBetaAlphaNot available

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

In the catalog

Ultima Failsafe System is one of 3,545 Optimization mods on ModsFinder, and one of 1,250 Optimization mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Optimization mods3,545 NeoForge mods Mods for 1.21.132,366

More from ashleykarmic

All projects

Camoperata1.21.1

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FerriteCore1.16.5 – 26.3

ImmediatelyFast1.18.2 – 26.3

Sodium Extra1.16.2 – 26.3

What the author says

This mod is a semi advanced mixin project; We specifically target several key crash-origins, and purposefully guard them against crashes in a way that doesnt majorly effect gameplay; After all, all the edits our mod does, can simply be reversed by restarting the game fully, or the server fully, It's all saved to only…

ashleykarmic, on the Modrinth page

Official listing

Modrinth page: modrinth.com/mod/ultima-failsafe-system
Owner: ashleykarmic
Published: 2026-07-04
Updated on Modrinth: 2026-07-09
Facts verified: 2026-10-15