Pixel Art XL: Stable Diffusion XL for Pixel Art
huggingface.co
huggingface.co
The previous pixel AI I'd seen had this really awkward pillow shaded art-style but this is much better.
I myself am working on KREA, but we focus more on moodboards, though some people use our software to create assets for games.
I've had a lot of success using a combination of stylized StableDiffusion models like
OccidentalMix (careful, potentially NSFW: https://civitai.com/models/63920/occidentalmix)
and Ditherdragon (https://winterveil.itch.io/ditherdragon) which uses special downscaling algos to turn that into astoundingly good Pixelart.