Just ported for fun famous Doom-nano by David Ruiz for the ESPboy

This is not an actual Doom game, just picked some sprites from it (and simplified a lot). The rendering engine is more like a Wolfeistein 3D.

Original code by David Ruiz for Arduino Nano and OLED 128x64
https://github.com/daveruiz/doom-nano

Source code of ESPboy fork
https://github.com/ESPboy-edu/ESPboy_doom-nano