Overview
Following this guide and editing the game files will allow you to access the PS4/Vita exclusive Dog Shrine!
Introduction
Note: Only works with version 1.08 for the PC.
So we all know about the Dog Shrine from the PS4/Vita version of Undertale, and how you can waste spend money on it to upgrade the room and mess around. In update 1.05 to the PC version, the assets of the room were added to the game (Sprites, music, room file and text) but unfortunately, the room isn’t accessible through normal means. However, by easily editing the code in the data.win file, you can open up the room and use it the same way as in the PS4 version!
To edit the data.win file, you’ll need a program which can edit the file, I recommend using HxD Hex Editor.
Editing data.win
So, after you’ve downloaded HxD Hex Editor, you need to find the data.win file.
The file should be at the Undertale folder, and the default path is C:Program Files (x86)SteamsteamappscommonUndertale
If it’s not there, then it should be wherever you installed Undertale.
Now after you located the file, go ahead and open it using HxD, either by clicking on the file and opening it as HxD, or going directly to the program and opening data.win through it (You might want to create a backup of data.win just in case).
1. In the Hex Editor, press Ctrl+G to open the Goto Window, then paste 0x0071009C and press Enter, then change “05 00” to “26 06”.
3. Travel to 0x00BA41A8 and change “04” to “01”.
4. Travel to 0x00BA4528 and change “04” to “01”.
5. Travel to 0x00BD0988 and change “04” to “01”.
6. Save data.win (Ctrl+S) and close HxD.
If you’ve done everything correctly, then Congrats! The Dog Shrine room is accessible and fully functional! Go to Papyrus’ house and enter the sink to get to the shrine (Note that the collision at the left wall of the entrance will be missing.).
Note: Several people have asked why they can’t find the offsets. Usually it’s because you still have the “0x” in front of it upon putting it into a program such as HxD. Getting rid of the “0x” when putting it into your programs should solve the issue.
Conclusion
Thank you for reading my guide and a bigthanks to colinator27 and impiaaa from r/underminers for figuring out how to unlock the Dog Shrine and for letting me use his guide!
If you have any questions, don’t hesitate to ask!
Note: This guide currently works only on PC version, and will not work on Mac/Linux versions.