After I played around with the timer and transition libraries, I decided to make another simple sample game using timers and transitions. This game took 99 lines, but I’m sure I could have gotten closer to @davebollinger’s 7 LOC had I tried really really hard. 
So, here’s " Runners". It’s a simple game about keeping Bob, well, all Bobs, from reaching the finish line. Keep popping them!
Like with the previous sample game that I recently uploaded, https://forums.coronalabs.com/topic/74137-game-in-less-than-150-lines-of-code-with-corona-speed-test/, this game uses simple, hopefully easy to understand code and has no dependencies apart from the images and font that are included, meaning you can just download the project and play & learn.
Again, this project took less than one hour to make, and while it should be bug free, if you do find a bug, then please let me know. Feel free to do anything you want with the project.