Where Are Undertale Yellow Save Files Located?
Where Undertale Yellow keeps saves on Windows, including the GameMaker data folder to back up safely.
Last updated
Undertale Yellow follows GameMaker habits. Saves live under Local app data in a folder named for the game, with numbered save files plus config and settings. There is no account sync, so the folder is the progress.
The name casing trips searchers. Most installs use UNDERTALE_YELLOW in capitals, not the pretty title case. If AppData search finds nothing, enable hidden files and check Local directly. Back up the whole folder rather than single slots. Config files beside the saves matter for fullscreen and binding choices.
Where Undertale Yellow stores this, by platform
%localappdata%\UNDERTALE_YELLOW
Saves are file0 and file1 plus config inside this folder. Copy the whole folder with the game closed. Name is uppercase in most builds, so match it exactly.
Frequently asked questions
How do I back up Undertale Yellow saves?
Copy the whole UNDERTALE_YELLOW folder with the game closed, then place it in the same Local path on the new PC. Saves are file0, file1, and config files inside. The exact folder suffix is uppercase in most builds, so match it exactly.
Does Undertale Yellow use Steam Cloud?
No. The fangame writes locally like other GameMaker titles, outside Steam Cloud. You must copy the folder by hand for moves and reinstalls. Keep a dated zip after each route, since the game overwrites slots without much warning.
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