The particular game linked in the article is copyright 2014-2022 by Lexaloffle Games https://lexaloffle.com/pico-8.php and reading the FAQ page I see:. Source: over 1 year ago

Gander, if you dare, at the book that will teach you everything there is to know about the Pico-8. - Source: dev.to / over 2 years ago

I'm going to teach you a lot about GameMaker Studio, Pico-8, and Love2D. - Source: dev.to / over 2 years ago

You can try https://toonify.photos/ - they have a free model. Source: about 1 year ago

I know that there are some apps that can do this (https://toonify.photos/, Instagram and Snapchat filters, etc) but I would like to know if there is a way to do it through Stable Diffusion. Source: almost 2 years ago

Obviously most people's games doesn't want photo-realism, but one can throw it through https://toonify.photos/ and see if I'm happy with the results. For 3 pounds I can get unlimited SD quality conversions, but I need decent quality inputs to use... Source: over 2 years ago

Assuming you made this using: https://toonify.photos/ https://deepai.org/machine-learning-model/toonify or this new one. https://colab.research.google.com/github/yuval-alaluf/restyle-encoder/blob/master/notebooks/inference\_playground.ipynb. Source: about 3 years ago