Play Fireflies
Fireflies is a free light-and-sound memory game you play in your browser, on a phone or a computer: no ads, and nothing to install.
Sing their tunes back, a note longer every time, even as they trade places.
Sing their tunes back. Light five lanterns a night.
What scores. Note sung back: +1. All five lanterns lit: +5.
How a run ends: one wrong note in a tune.