Divide the cards between players and place a single move piece on the all out card. Each player in turn laying down a card and moving the move piece to the card.
The game ends when the all in card traps the move piece and the game restarts or all cards are down and the final player moves the piece to their card.
If you loop onto a previous card you dont need to lay down a card and can simply move the game piece.
When laying down a card all connections must match in direction.
The player with the all out card plays it first.
The player with the all in card can force a game restart.