I made a little augmented reality toy, I guess you can call it. Not quite a game but something you can play.

It's for one of my classes this semester at AUArts where the first project is exploring reflectivity. Maybe it's because I just finished Death's End by Liu Cixin, but one of the first things that came to mind when thinking about reflection was that there are spacecraft that can be propelled by reflecting light, sailing on sunlight.

https://www.heyvian.com/web-xr/solar-sailer/