In Taco Loco, you want to stuff others as full of tacos as possible.

Each player has a hand of three cards, and on a turn you add one of your fillings to a taco in play, keeping all of the cards visible. If the taco now sums exactly 11, give this taco to another player, who sets it aside. If the sum is less than 11, nothing happens, and if the sum is higher than 11, you've overfilled the taco and ruined it; take the cards yourself, and set them aside. If you wish to play a card of the same value as the most recently played card in a taco, set this card aside to form the base of a new taco.

The game includes two special cards: the "legendary taco" card immediately fills the taco to 11, allowing you to give these cards to someone else, whereas the "lonesome taco" allows you to bring the sum of a taco to 0 or to respond to someone playing a legendary taco, forcing them to take it.

When all the cards have been played, the game ends, and whoever has the fewest cards wins.