The secret here, once you've followed SHOGUN's instructions, is to locate the flag you want at flagdownload.com , resize it there to 500x500, save to desktop then lift into the file 'flags' as in the original instructions; flagdownload.com is free.

I'm pretty late, but, if anyone's having issues with the aspect ratio of the flags and having it appear weird in game (like the image for step 8 of this guide), the aspect ratio of the image file needs to be 1:1. You can change this in Paint or pretty much any image editing software. Since most people have Microsoft Paint, here's how to fix it there:

1. Open the file in paint, right click your flag in the Flags folder and go to "Open with">"Paint".
2. Once you've opened it, go to the top left and open "File">"Image properties". You can also open this with Ctrl+E.
3. In the new window, find "Image size". The height and width must be equal for the flag to appear correctly. For example, if your flag is 1920x1080 pixels, change it to be 1920x1920 pixels.
4. Click save on the image properties window and it will close. Then, save and exit Paint. The flag should now appear correctly in game.

I tried to do all of the steps as you said, The Flag is kinda broken. the add on flags are not working as I expected.

@dgallagher4 Just follow the guide that's why it's here

Could someone please make a mod that adds state flags to the game?

Ratio 1920x1080 (16:9) should be good enough.

hey quick question, but whats the proper aspect ratio and is there any tools i can use to make it actually stick to it, everything i tried messed up HORRIBLY

No problem!

thanks for this article bro

i fixed it; u need to enlarge the flags.