The base game is divided into two decks, distinguishable by their black and golden card backs. Together, they contain 102 cards, made up of four suits, each including cards numbered 0 through 10 plus an Ace, and three Jokers.

Each card features a unique effect, clearly described on the card itself. Some effects activate when the card is played individually, while others become stronger or change entirely when played as a pair.

Once cards are dealt and two starting cards are placed face-up on the board, players count down from three, then flip their hands and race to play a card that matches the number on either of the starter cards.

The objective is simple: be the first to empty your hand. When a player wins, the remaining players enter a Duel, a best-of-three showdown where the player with fewer cards left is declared the winner.

Important: Card values do not matter in Trinity. There's no concept of higher or lower numbers, only effects and timing decide the outcome.