Unity will be holding another live training session on December 19th, at 3:00 - 4:00 PM EST. For this live session they will be going over how to make a simple 2D flappy bird style game. During this session, they will be going over the flapping mechanic, spawning random obstacles, and setting up a simple game manager.
This session will be hosted by Matthew-Schell. If you are interested in learning more or in signing up, you can do so here: https://unity3d.com/learn/live-training/session/making-flappy-bird-style-game