SaveVault Core is a free, open-source Unreal Engine plugin (UE 4.26–5.7) that replaces the engine's built-in save system with a more robust foundation. It provides typed save game objects, binary file headers with integrity checking, multi-slot profile management, and a clean Blueprint API — all with zero configuration required to get started.

It is MIT licensed and distributed on GitHub and the Fab marketplace at no cost.

Github repo: Github