The demoscene is still alive and well, and the proof is in this truly awe-inspiring game demo by [daivuk] : a Quake-like “boomer shooter” squeezed into a Windows executable of only 64 ...
Embedded C++ codes and a Python client to send xbm files through serial. Made to target ESP32 Devkit-V1 / DevkitC-V4 connected to a SSD1306 128x64 through I2C. Currently can only achieve ~6 FPS.