One interesting thing about neural net generation of images is that up until recently, pixel art didn't work at all. Attempts at using GANs to learn Pokemon pixel art etc always failed miserably. The release of CLIP turned out to enable pretty good pixel art generation, and it's only gotten better - DALL-E 2 also can just do pixel art.

eg https://github.com/pixray/pixray (see https://twitter.com/KaliYuga_ai/status/1532197896090681344 https://twitter.com/KaliYuga_ai/status/1532129051434958851 https://twitter.com/KaliYuga_ai/status/1531478055344082944 )

https://www.reddit.com/r/dalle2/comments/uswf2r/pixel_art_of... https://www.reddit.com/r/dalle2/comments/upf93v/a_raccoon_le... https://www.reddit.com/r/dalle2/comments/ulh07q/spaceships_2... https://www.reddit.com/r/dalle2/comments/uh8sep/pixel_art_of... https://www.reddit.com/r/dalle2/comments/uav52t/tileset_of_f... https://www.reddit.com/r/dalle2/comments/uc4jnv/spritesheet_... https://www.reddit.com/r/dalle2/comments/ufb564/cherry_bloss... https://twitter.com/hardmaru/status/1531545772420132865