From the Super Mario Wiki
Twin Swimmers (originally known as Perfect Match) is a microgame found in the Touch Training stage in WarioWare: Touched! It returns in WarioWare Gold as one of Young Cricket and Master Mantis' microgames.
The objective of the game is to memorize the cards and then tap one card to match it in displayed. If the player matches a wrong card, they lose the microgame. This game has twice the time to complete than the others; half the time is used to memorize the cards and the other half is used to match a card. In WarioWare Gold, the cards are replaced by swimmers.
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