Unity Study Projects from IGDPD (ongoing)
A series of exercises from Introduction to Game Design, Prototyping, and Development by Jeremy Gibson Bond. I've been working through these to learn C# and Unity. While they're just student work, they're quite fun - and educational - to code.
Note that the Unity Player is not supported on all mobile devices
GDC Talk (2015)
Slides from a talk I gave at GDC.