3 Stones

A tool to play the game called "3 stones", from French author Bernard Werber (see for example <a rel="nofollow" href="http://www.bernardwerber.com/jeux/jeux.html">that page from Bernard Werber's website [fr]</a> ). <ol> <li>Install the app on your device and on the devices of your opponents. </li> <li>Tap the screen to select 0, 1, 2 or 3 stones and put the device face down in front of you. Wait for your opponents to do the same. </li> <li>The winner of the last round goes first. If this is the first round, you go first. Guess how many stones in total are selected on all phones and tell everyone what your guess is. You are not allowed to bet on the same number of stones that another player has already bet on this round. Betting proceeds clock-wise. </li> <li>When all players have placed their bets, turn the devices face up and add all selected stones. The player who predicted the total correctly wins the round. </li></ol>