For one player to have all the other players in his empire. Communication and remembering items.
paper and pen
Players write down a famous person on a piece of paper and folds it up. They are to do this so no-one else knows who they have chosen.
Facilitor collects the pieces of paper in, then they read the names out. Depending on group, you may want to read these names out more than once. Once the game has begun - the names are NOT to be read out again. It is up to the players to remember what names have been read out.
After the names have been read out, nominate a player to start the game. Player A asks player B if they are insert a name that has been read out. If player A guesses right, then player B joins player A's empire. If player A is wrong, then player B gets control of the game and gets the chance to build their empire.
The game gets slightly complex here. If player A has an empire, another player (player C) can go after player A's entire empire. To do this, player C must guess who player A is, as player A is the head of the group. If player C is correct, player A and all of their empire joins player C's empire.
Once a player joins an empire, they can not be seperated from it, only the head of the empire can be guessed.
Players in an empire can confer between themselves - however, it is up to the head of the empire to make the statement and ask the other player. (This is were communication comes in, as players will forget the famous people, so collectively they can work out who is left.)
The game continues until one player has all the other players in their empire.
Instead of having famous people, why not choose a job, or item of food?