A save editor for LDOE is a specialized tool—often bundled in a "repack" or a "Mod Menu"—that allows players to manipulate the data within their saved game file ( zombie.survival.craft.z on Android). Unlike a trainer, which changes game memory in real-time, a save editor modifies the actual saved data (levels, inventory, blueprint completion) to create a desired state.

Many users have reported malware, such as Trojans and data stealers (e.g., LummaC2), bundled inside save editors and repacks.