I found a regular poster of ariral but upscaled through ai on reddit, I'll leave it here in a zip, and a couple of ariral arts along with it just in case

Maybe someone has the poster that is in the sandbox but can't get it in the main game?

These are the ones in the zip

Нужно нажать "Refresh all assets" в настройках.

Я разобрался, надо скринить картинки, обрезать, а потом вставлять в папку и нажимать  "Refresh all assets".

So, I've updated my archive with posters by adding more poster-like images instead of random pictures of silly alien cats :)
Download link ----> *click*

Is it possible you can share the artist of the posters? I love the art.