The game has 2 players, playing in rounds.
In each turn, a player rolls a dice as many times as he whishes. Each result get added to his current score.
If the player rolls a 1, all his current score gets lost. After that, it's the next player's turn.
The player can choose to 'Hold', which means that his current score gets added to his global score.
After that, it's the next player's turn.
The first player to reach 100 points on global score wins the game wich is a default, but you can change the final score.