Notepad++ and your other editor show strange text because they always assume that the file you're trying to open is a text file. This isn't the case (some parts

Notepad++ and your other editor show strange text because they always assume that the file you're trying to open is a text file. This isn't the case (some parts of the file actually are meant to be interpreted as text, but not the whole file) but the editor does it's best to interpret the file as though it were text. Those strange glyphs are parts of the file that aren't supposed to be text. It would be easier to answer your question if we knew what game you were playing. Not many games share the same save file format, so there isn't a single answer which will work well for everything. Some games' save file formats do have dedicated editors made for them, and if one exists for your game, that would be the easiest and safest way to edit your file. Even if there isn't a dedicated editor, you should be able to edit the file with a thing called a hex editor. You seem to be using Windows, so Free Hex Editor (https://frhed.sourceforge.net https://frhed.sourceforge.net) may be a good place to start. This will still show you the strange characters on one side of the screen, but it will also allow you to see and edit the actual numbers, if you know where to look for them (and how to work in hexadecimal numbers). Can you link us to the Reddit post you were talking about? That would be useful information for answering your question further.