High in the mist-shrouded mountains of Japan lies the Onitama Shrine, a place of enlightenment and meditation. Here, martial arts masters regularly gather with their talented students to prove their superiority in combat.
Onitama is a two-player, perfect information abstract game with a random starting set-up. On a 5x5 board, both players start with five pawns on their side, with the main pawn in the middle.
Each player has two open cards that each display a possible move for any of her pieces. There is a fifth card that cannot be used by either player. On a player's turn, she chooses one of her cards, moves one of her pieces according to the chosen card, then replaces the card she used with the fifth card. The other player then chooses one of his cards, moves accordingly, and exchanges that card with this fifth card — which is, of course, the card the first player just used. Moving onto one of the opponent's pawns removes that pawn from the game. Taking the opponent's main pawn, or moving your main pawn into your opponent's main pawn's starting space, wins you the game.
In addition to the base game, the Onitama Big Box also includes three expansions: The Light and Shadow expansion introduces the ninja as a new type of pawn that moves in secret. The Way of the Wind brings the neutral Wind Spirit into play, enabling new tactics. Sensei’s Path contains 16 new movement cards. The Onitama Big Box also includes 14 promo cards.