Ah Crap, Asteroid Field!
Infinite runner where you avoid ever-increasing series of asteroids. Built in GameMaker Studio (1.4) in seven hours for a jam in late 2015.
Updated for GMMeetup December 2017. The leader board is local to the machine / browser playing, and isn't internet based. This is added just for the show!
Can be found on Steam Workshop:
Source code is over on BitBucket: