CapnDice

CapnDice is a user-friendly version of the classic game of Liars Dice, made popular by the Pirates of the Caribbean films.

CapnDice is a bidding game in which players compete to guess how many of twenty hidden dice have a certain value. It can be played with 1 to 4 people. If you choose to play alone, the computer can generate three AI opponents. You can also play with combinations of multiple human and AI players.

Each player has five dice, hidden to the other players. Players take turns bidding on how many dice of a certain value have been rolled by all players collectively.

--Free for a limited time only--

In response to several comments: ones count as "wildcards". As you can see in the screenshot, there are three threes and three ones. This will be counted as six threes.