The Falling Sky is a short, sweet little game about generating constellations from the time of day. Throughout the day, every time you think "I wish..." you make a note of the time, and use it to fill in the blanks and generate a constellation.
You determine when they appear, what they look like, a brief story, and a blessing they may bestow upon you.
I played a little differently by crowdsourcing the times from twitter instead of making notes, but I ended up with enough replies to make 10 constellations and had a great time!
You can see all the constellations we made HERE