Memory Match (WarioWare Gold)
From the Super Mario Wiki
Memory Match is a secret minigame in WarioWare Gold in the game's Toy Room. In it, the player has one minute to match pairs of character cards consisting of Wario, Jimmy T., Mona, Dr. Crygor, and 9-Volt in each stage. Each character match is worth a varying amount of points. If two cards are incorrectly paired, they will slowly turn over and become inaccessible until they completely turn over. A hint showing where a correct pair is located will appear after getting many incorrect pairs in a row. A "fever" bar on the left is filled each time the player makes a match, and if it is completely filled, the player has a few seconds to freely match cards without having to guess what they are. Similarly, a toilet indicator is also filled each time the player makes a match. Once filled, the player can choose to redeal a new set of cards. Matching all pairs correctly in a set without mistakes will grant a "Perfect!" bonus. Once time is up, the player is given a score based on their performance.