Yatzy is a dice game for Android devices that allows you to play with your friends or against a computer opponent. You can choose between 3 modes:

1. Solo game where you can practice and raise your best mark.
2. Play against a friend: Play turn-by-turn with a friend on the same device.
3. Play online by taking on a rival online. 

There are 13 rounds in a game, and at the end of each round, you can score. The goal is to score the highest number at the end of the game.

You can also do the following during a game:

1) Roll the dice: You can roll the dice up to three times.