I don't know -- Pico-8 seems to be the perfect answer to what the author is asking for: it's a great environment to learn about these things, and there is a lar

I don't know -- Pico-8 seems to be the perfect answer to what the author is asking for: it's a great environment to learn about these things, and there is a large and useful community and pool of resources around it which will tell you exactly how to develop 2D games (including the pico-zines, https://sectordub.itch.io/pico-8-fanzine-1 https://sectordub.itch.io/pico-8-fanzine-1, wiki etc). The0 "cartverse" and the already included games also provide plenty of examples of games that are both easy to learn from and actually fun.