Turn over two drawers. If they match they stay open. It is the oldest game there is, and it is still the hardest one to be good at.
One device, two people, taking turns. Find a pair and you go again — which is how somebody wins four in a row and takes the whole thing. No clock: nobody should be hurried.
Stars fit out the cabinet. A theme changes the table, the rim and the backs of the cards, and nothing else — none of them make the game any easier, which is the point of them.
Ranked on Time Attack, because it is the one mode where everybody plays the same way: thirty seconds on the clock, and every pair you find buys a little of it back.
The clock is stopped.
Every card has exactly one twin somewhere on the board. Turn over two: if they match they stay open, and if they do not, they go back down — but you got to see them, and that is the whole game.