It's an app that plays Conway's Game of Life on the Ledger Nano S hardware wallet. Features customizable speed and randomization to prevent stabilization.
You'll need an arm-none-eabi-gcc and a copy of clang placed at $BOLOS_ENV/gcc/bin and $BOLOS_ENV/clang/bin, respectively (on my computer, I make this work by symlinking /opt/local to $BOLOS_ENV/gcc and /usr to $BOLUS_ENV/clang). Then run make load to install the app on your device.