I can't stand to see so many typos in this Limmings Revolution level names, so I wanted to edit them, but I can't locate them in a game file (English ones). Where are they, can someone tell me?
1) They may not use standard ASCII encoding. Try a relative search instead of a standard one.
2) Most likely, the level files are compressed.
This post may have the information you need, if you can work out the technical jargon. According to it the strings should be ASCII. While some types of files are compressed, I don't think the ones containing the level names are?
I don't see any files in game folder that have "level" in them. What now?
As I can see, level names are inside the "lemmings.box" file. Use some hex editor to change them.
The topic ccexplore linked to has a post on how to "extract" the box files, though as it would appear the contents aren't compressed you can also just edit it directly.