13 Pebble smartwatch apps in C. Watchfaces (binary-clock, morse-time), games (pixel-invaders, snake, game-of-life, reaction-tester), and utilities (pomodoro-timer, magic-8ball, dice-roller, breathing, tally-counter, stopwatch, compass).
Supports Diorite, Basalt, and Emery platforms with emulator testing and real-device deployment. The Pebble is dead but the SDK still works and C on a tiny screen is still fun.