Setup:

Mark half of the crescents on the front as waxing and half as waning.

Do the same for the halves and gibbous's.

Mark the full and new moons as well.

Warning: DO NOT MARK ON BACK, it ruins the game.

How to play: Shuffle and then set the tiles face down. Once you begin you draw tiles and try to score, you may hold three tiles at once and place on per turn.

Scoring: Match pairs or full moon sets for two points each, eg. Full and new moon or two waxing half moons. A lunar cycle is worth as many points as there are tiles in the cycle, eg. # phase=New moon, waxing crescent, waxing half moon. An apponent Can use your placed tiles to their advantage.

At the end you get one point for each tile you still posses.

For a better understanding of the rules, https://g.co/doodle/7cgvv9w to play Ai and learn the rules.