I'm confronted with the following situation:
First of all nature decides which of two games is played. Then each of two players make a simultaneous move, but only player I knows which game is played.
How can I display this information in extensive form?
The root will be the nature, which decides whether Game I or Game II is played. Now we have two additional layers for each game. Now I would use an information set to display that the moves are taken simultaneously, but how can I display that only player I knows about which game is played?