It's awesome to see your journeys, one of our favourite things about Dennis's story (below) is the fact he keeps 'getting sidetracked making the lessons into actual games'. What a great way to learn and cement that knowledge!
I started the course a year ago, and I'm sort of embarrassed but sort of happy to say that I'm still not done with it, because I keep getting sidetracked making the lessons into actual games!
My first one was the Brick Breaker lesson which I turned into "Pizza Breaker", where the ball was a photo of my girlfriend's face and the bricks were pizza. Obviously this one didn't go up on the App Store, but I did install it on a few phones, which was a cool milestone.
When I was playing around with the Laser Defender lesson, I decided to mess with some of the game dynamics. I turned everything sideways (my last game had been portrait, so I wanted to try landscape), and instead of making the enemies bounce back and forth on the screen, I made them warp from one side to the other. I had colliders on the objects but hadn't set the enemies to destroy when hit by a laser, so the first time I played, when I shot lasers at them they bounced all around the screen and I thought: "Hey, this is kinda fun!"
I made some quick art for the game with Hexels (which is awesome for cool triangular art) and kept adding to it, and before long I knew I had to take this one all the way. So I called up my friend Jake Forsland (a high school friend, lover of games, and musician on the side) and we set to work!
A couple months later, we have a game that we're truly proud of, out on the App Store and the Google Play store. Some of the aspects that I'm most proud of are the achievement system, the unlockable art and music, and the procedural music that intensifies as you play. We've been out for about a week, and are at a couple hundred downloads, so we're pretty happy!