An interactive guessing game!

The audience is shown two envelopes. One of them has money in it and the other one has just a piece of paper inside. If the audience guesses the correct envelope, they win the money.

In the end they lose.
The audience makes the wrong choice and they just get an envelope with a piece of paper in it.

The mentalist wins every time.

No gimmicked props.

Easy to do.

You only need two envelopes.