🤑 Indie game store🙌 Free games😂 Fun games😨 Horror games
👷 Game development🎨 Assets📚 Comics
🎉 Sales🎁 Bundles

What Programs did you use to produce the image?

to reply, apologetically very late, to your question: the programs were all written in javascript. there is a bit more detail about the approach in a passage at the end of the book.