Home Screen Arcade is a game platform that runs entirely on the home screen of your Android device.
It's a tech demo - an experiment in what can be done with normally-staid home screen components - but it's also surprisingly playable. Your game controllers are widgets, your score and game status are shown in a (heads-up) notification, and the action happens in a live wallpaper.
As a demo, this version of the app includes open-source tributes to three classic arcade video games, as well as an open-source pinball (arguably the most classic arcade game of all). See the Credits below for details. All four games are functional, but improvement is always possible; the goal here is to demonstrate the platform. As such, only the minimum of changes was made to each game's existing source code.