Greetings sorry to be a bother, but does this work for OSX? Or any apple products? And is there not a way to "tamper' with the files manually to make them applicable? just an F.Y.I I do own undertale on steam and I am aware steam files are limited to view in the OSX version. I apologize for my inconveniences.
On Mac OS X, the SAVE data for Steam and DRM-free versions of Undertale may be found at ~/Library/Application Support/com.tobyfox.undertale. Delete all the files; then you're good to go.
If you find where the Undertale save files are located, you can delete them and start fresh. According to this Steam forum post, the save files are in appdata\local\UNDERTALE on Windows, ~/Library/Application Support/com.tobyfox.undertale/ on Mac. There is also a save manager available which one of my friends has used successfully, but since it's a third party program use it at your own risk: Undertale Save Manager.
Undertale is a PC-exclusive game, so far not available on any consoles. The game is available to download on Steam or at the official website, undertale.com. It is only US$10 at this point. The game does not require a particularly strong PC to play. Because the game uses a 2D, retro style, graphics are not a concern. For more specific information, see the game's Steam page or its official website. 2b1af7f3a8