Street Fighter: Duel images

[tombmonkey]

So, this game's images have a .png extension but I'm not sure if they have been protected or if they are packed in some form.

Spine files (skel, atlas) and plist are not protected, so maybe images aren't either, either way it's beyond my skillset.

Can someone look into the .png files and see if they are packed in some way or protected?

https://www.mediafire.com/file/n1p0i8stc...0.rar/file

Here's an entire archive, I think it corresponds to a single character.