MODERATOR NOTE: This is the notebook used in the livestream "Build your first game in the Wolfram Language with Unity game engine" on Wednesday, March 29 -- a part of Wolfram R&D livestream series announced and scheduled here: https://wolfr.am/RDlive. Subscribe to @WolframRD on YouTube for more livestreams, exclusive VODs, creator presentations, behind-the-scenes insider videos, and so much more.