To start the game, everyone needs to be wearing a hat. It doesn't matter what kind of hat it is.

1. The only rule is that no one can take their hats off until you (the host of the game) have done that first.

2. Announce everyone the objective - to remove your hat and not be the last.

3. In the mean time, let another thing, game or conversation take place. Most people will lose attention and forget about this game.

1. A bit later remove your hat.

2. You will see that people gradually start to take off their hats, but there will always be people who are engaged in a conversation or doing something else and forget to take their hat off.

3. Think of an appropriate thing that the loser has to do

1. This is a party game best suited for events where a lot of people are in the same room or sitting around a table.

2. This game doesn't require a lot of thinking, you can do anything else even while the game is being played.

3. The main idea behind the game is observation.