Save Game — Invizimals Shadow Zone

Goal: Provide a meticulous, actionable specification for a feature that manages, analyzes, and manipulates save-game data for Invizimals: Shadow Zone (PSP/PSP Minis/PS2-era title context assumed). The feature should support players, modders, and preservationists who want safe, verifiable handling of save files (backups, validation, inspection, transfer, fixes, and documented format interpretation).