My first C2 project, Rebound is a remake of a game I made with Game Maker. I still had ideas I hadn't implemented, and I wanted to learn C2, so thought the quickest way to get to know how it works and how it differs from GM was to port an existing game rather than develop something entirely new.
It turned out well, and though I ran into a few problems at some stages when I was trying to mimic some default GM behaviour, I find it noteworthy that I've managed to recreate the game exactly, even improve it, without any programming whatsover; this despite some coding being needed to finish the game during its development in GM.
Rebound at the Scirra Arcade
Feedback appreciated!