Ask Zandar
On their turn, each player draws a question card, reads it out loud, guesses whether Zandar will answer affirmatively or negatively, waves their hand over the top of Zandar's globe (to trigger a light sensor), and listens to his answer. If they guessed correctly, they can either take a gem of their color from the pile and put it in front of them or onto the game board. If they guess incorrectly, they must return one.
The other players can make a "side bet" during their turn and guess at Zandar's answer. If they are right, they get a gem of their color. If they are wrong, they must return one.
There's a few other rules to the game, but that is main gist of it. The first player to place all six of their gems onto the game board wins and gets to have their fortune read by Zandar.