I made some app icons that we tested. I can't remember which one performed the same as the one we had, but it was too risky to swap it out. I don't think any of these have been used in the stores after the tests. Screenshots might be the same deal. I am not sure. I did not make the character art, I just used character assets we had used in the game. I just bashed them together to create interesting layouts. The red banner was a suggestion from another artist, that I ended up using to create some contrast against the background, to make the text pop. I made hundreds of versions for these, in so many languages :D I was really glad when that work was done!