RIFF WEBPVP8X

[squidiskool]

Hello, I am trying to get sprites from the discontinued game called Car Town Streets. Some png files are normal png files but most of the files have this odd header. I searched it and it said it was WEBP so I renamed it to WEBP and still wasn't openable. What is this?
Note that this is not a normal png file it is a fake png file
https://drive.google.com/file/d/1dSMCM12...sp=sharing