The players are split into two equal teams and a playing area defined. Each team is allocated told what colour their postcards are and one of the bases selected as a post-box.

If there are two leaders, then one has a supply of both coloured postcards, the other has stickers (to act as stamps). The leaders are free to roam around the playing area, and to swap what they are carrying. If there are more leaders, then they can act as the franking machine, or air-mail stickers.

When the game begin the players must find the leader with the postcards, they must then find the leader with the stamps, and optionally the airmail stickers and finally the franking machine. Each leader should verify the stage before has been completed before adding their ‘bit’ to the postcard. It may be necessary for the final leader in the chain to keep a count of completed cards, or have another leader act as policeman around the post-box!.

Once a postcard is completed it can be posted in the post-box. The team who has posted the most complete postcards wins.