Rules:

1. The game has two players, and each player takes turns to roll a dice.
2. On a player's turn, they can roll the dice as many times as they want and add the rolled numbers to their current score.
3. If a player rolls a 1, their current score becomes 0, and they lose their turn.
4. A player can choose to "Hold" their current score, which adds their current score to their total score, and then it becomes the other player's turn.
5. The first player to reach the winning score (e.g., 100 points) wins the game.