Fibonachos is a card game that combines Mexican cuisine, the intriguing world of math, and engaging trick-taking gameplay to make something incredibly unique.

The deck consists of 51 cards, 17 each in three suits, and at the start of a round, deal the deck out as evenly as possible. Shuffle the separate "spicy" deck, then reveal the top card. The lead player for the trick plays a card, then everyone else must follow suit, if possible. If two "fibonacho" cards are played in a trick — that is, cards numbered 1, 2, 3, 5, 8, or 13 — then the fibonacho cards become trump. After everyone has played a card, if trump was activated, then whoever played the highest fibonacho claims the revealed spicy card; otherwise, whoever played the highest card on suit claims it. The winner reveals the next spicy card, then leads to the next trick.

Once all the tricks have been played, count your spicy points to determine your score for the round — and if your total equals a Fibonacci number (1, 2, 3, 5, 8, 13, 21), then you score the next Fibonacci number instead of your actual total. If you manage to collect no spicy cards, then you score 34 points!

Whoever has the most points after three rounds wins.