Tired of always creating a backup of the pre-made maps you downloaded? Then install the LockDown Mod by username Adubbz.
What the Mod Offers
The LockDown Mod is a simple small mod that aims to prevent pre-made maps from being permanently destroyed. The mod functions by creating a duplicate of a given map when creating a new world, so you don’t have to create backups manually. The mod has GUI elements that can be disabled or removed according to the players’ preferences.
Should You Install It?
The LockDown mod adds a nice utility and option that prevents you from breaking downloaded adventure maps, and your favorite world. The mod is very helpful when you have more than one player playing in the same computer unit.