While technically not a game, I managed to make something out of the Playdate SDK while waiting for my device to arrive (hopefully by the end of this year)
Note: If while developing for the Playdate you feel you're wasting 90% of your time Googling and fighting with Lua's quirks, you are not alone
- Launch the game in the Playdate Simulator (or a real device, if you're lucky)
- Spin the crank to advance the days
- Press up or down to magnify or shrink the solar system
- Press left or right to change planet and display its number of revolutions
- Press a to turn the auto-crank on/off
- Press b to hide/show the user interface