The board starts with all cards face down. On your turn, click any card to flip it, then click a second one. If both cards show the same image, the pair is found and stays face up permanently. If they don't match, both cards flip back down after a brief moment โ and that's where memory comes in.
In classic mode, the goal is to match all pairs in as few turns as possible. In timed challenge mode, you have 60 seconds to find as many pairs as you can before the clock runs out. In online multiplayer, two players take turns and whoever finds the most pairs at the end of the round wins.