Check out as well
- 3D Rendering on an Arduboy: https://www.a1k0n.net/2017/02/01/arduboy-teapot.html
- General overview of Arduboy — open-source homebrew 8-bit platform, and its community: https://www.inputmag.com/reviews/arduboy-fx-review-no-quirk-...
- Some people make their own Arduboys: https://www.hackster.io/contests/arduboycontest