Expansive Skies is a short, sweet, constellation creation game!
You first roll 2d6 to determine how many stars are in your constellation, then draw a playing card, check the suit, and determine what it looks like.
A fast, easy game to learn, and there is a lot of room for making up your own stories about the constellations. This works really well on its own but can also be used as a game-within-a-game for players looking up at the stars.
I made 10 constellations, for my game, which you can read here