Dystopika

A fantastic and cheap city-builder sandbox, with amazing vibes and atmosphere, with more features and content planned. The photo-mode in particular is incredible, and you can use it to create some great videos and screenshots.
You can even import other images and videos for static and animated billboards.

However, if you look for billboard mods people share, like on the discord server for this game, note that the Dystopika community on Steam and Discord is FULL of AI art people. Now, the discord server itself doesn't share that much AI art, and the AI art does get labeled so people know, but most people in the community don't have any problems with AI art, and even get upset towards people expressing their discomfort towards the practice.

Sucks that the creator is aware of this and still lets AI art be practiced and shared in the community.