hi. i know theres a 25 character slots limit in online but i have searched in this forum and in the steams one and could no find the limit ( or it doesnt have limit) in offline.
So
Nope, I’ve got 70-80 characters offline. The only limit is likely your pc’s storage capacity.
I could imagine that there is some u_int32 or u_int64 limit.
Yeah, there’ll be some form of limit.
Probably not. The most likely is simply a foreach of your folder contents. Having a int limit would mean you’re storing them in a variable and you don’t need to.
Unsigned int seems to be the limit of files you can store on NTFS tho. 
Sure, but that’s a limitation of the file system itself, not the software. For example, if you use ext2, you can get way way way way more files (10 ^ 18). And if you still use FAT32 (why though?) you can only have 65k.
The point is that the game likely doesn’t store it in a variable, which means that it’s your operating system/hard drive file system that is imposing a limit. The game itself just lists whatever is in there, however many there are.
I think the client only loads the first 100 in the save folder but you can always just switch out the contents of that folder on your computer.
Character files are numbered. Whenever a number is involved (even as a string, as they likely will be converted into some other data type) I assume it will at some point run into the limit of the converted data type.
Or they integrated an offline limit to not slow down the client too much.
I wasn’t aware of that, since I never created an offline character. That does change things.
Either way, Mike already confirmed they have a self imposed limit, so this is all moot.
It’s fairly obvious if you’ve ever had a look at the save files.
I did answer that part 