The picture gives itself away one piece at a time.

A photograph appears as a tiny fragment and opens up every few seconds. The moment somebody recognises what they are looking at, they answer. Call it while there is almost nothing on screen and it is worth the most. Wait until it is obvious and so is everybody else's answer.

Use your own pictures

This is the part that matters. Any set of images works: your office, your products, your city, the machines on your factory floor, forty years of company photographs.

A stock photo reveal is a novelty. The same game running on things your room recognises is something people talk about afterwards, because half the fun is arguing about whose desk that is.

Ask a question once they have got it

Each image can carry a follow-up question, so a round is a reveal, a name, and then something worth knowing.

Uncover a piece of equipment and ask what it is used for. Uncover a product and ask when it launched. Uncover a painting and ask who painted it. It turns a guessing game into a quiz without it feeling like one, which is why this works in an induction or a classroom and not only at a party.

You set the speed

The reveal is yours to control, so you can hold an image while the room shouts at the screen, or move on when a round has clearly died. Some games here run themselves. This one gives you the dial, which is the right choice when the images mean something to the people in the room.

Where it works

Company events and conferences, trade shows and stands, school and university sessions, training and induction days, clubs and community groups.

It suits a big room, because a picture on a screen carries as far as the screen does.

What it is not

A game you can start empty-handed. Somebody has to choose the images, and the better the images fit the room the better the game, so this rewards ten minutes of preparation in a way that most games here do not.