Missing Mods Warning
This modification displays a special warning when attempting to load a save file for which necessary mods are missing. The system not only alerts about the problem but also displays a specific list of missing components — you'll know exactly what's required.
When this message appears, you have a choice: either return to the main menu to resolve the issue, or continue loading at your own risk, fully aware of the potential consequences.
In Forge builds for versions before 1.13, a similar feature existed, but it was later removed. This mod restores the lost functionality and additionally improves it.
On the world selection screen, all problematic saves receive a special icon with a tooltip — you can immediately see which worlds might load with errors.
This utility is particularly useful when testing various modded configurations, as it prevents accidental damage to important saves due to component incompatibility. It's important to note that the mod works exclusively on the client side and doesn't require server installation.
Visual Features
The new tooltip system clearly indicates problematic worlds even before loading them.

When trying to open a world with missing mods, a full warning appears with detailed information.

Animated demonstration of the system in action.
