Knowing your game’s engine ensures you choose a compatible editor that can parse the data correctly without causing file corruption. Where to Find a Verified RPG Maker Game Save Editor
It uses Node.js and Electron for the GUI, meaning it runs entirely on your computer, making it faster and more secure than online tools.
Extract the archive and run the application.
Once you're happy with your changes, click the "Save" or "Download" button. The tool will recompress the data back into the proper format and prompt you to download the modified file.
Giving yourself 99 of a critical plot item (like a specific dungeon key) can confuse the game's logic engines and permanently softlock your progression.
RPG Maker Game Save Editor: Verified Tools, Methods, and Safety Tips