Reef is a 2-4 player game where players build coral reefs. The aim of the game (like most games) is to score the most points. This is done by placing coral pieces on player boards representing reefs to fulfill patterns on cards that the players obtain. These cards also give players new pieces of coral to place in their reefs. On a player’s turn they can do one of two actions. They can either take a card from the three cards shown (or the top card of the deck at a cost of one victory point) or they can play a card from their hand, gaining the pieces of coral indicated, placing them on their player board, and then scoring points for completing the scoring conditions at the bottom of each card.