You don't need to replace a screenshot, just dump the picture into the folder. You can add all the custom images you want this way. My cyclops is covered in kittens ^^ (View Post)
Fun fact: the Cyclops' horn (left click while driving it) is apparently a Reaper mating call; drives them into a frenzy (haven't seen this myself, but saw someone else post about it lol). (View Post)