N-Mark Spade Panel

N-Mark Spade Panels, also known as Matching Game Panels, Card Matching Games, Matching Game spaces, or N-Spades, are Spade Panels in Super Mario Bros. 3 that appear on the world map for every 80,000 points gained. Whenever Mario or Luigi move onto an N-Mark Spade Panel, they are automatically taken in, unlike other panels.

When drawn into an N-Mark Spade Panel, Mario or Luigi must play a card game hosted by a Toad where their goal is to flip over two cards, each depicting an item, every turn to try and match a pair. For each card pair successfully matched, Mario or Luigi win that prize for their inventory, for a total of nine prizes per game. If Mario or Luigi mismatch twice, the minigame ends. Once all of the card pairs have been matched, the cards reset the next time around. Even if Mario or Luigi are unsuccessful at matching every card pair, the ones that they did match remain flipped over the next time they play the minigame.

Prizes

 * 10 Coins (1)
 * 20 Coins (1)
 * Super Mushroom (2)
 * Fire Flower (2)
 * Starman (2)
 * 1-up (1)

All Combos
The game randomly selects one of eight predefined configurations. Here are the possible combinations. The fourth, fifth, and sixth cards from the left on the bottom row will always be a Super Mushroom, a Fire Flower, and a Starman, respectively.