Two or more players. Thirty seconds to learn. Place letters face down on a table. Take it in turns to turn over pieces until a word of three or more letters can be made. If you see and say it first, put it in front of you. Beware! from now on the game has two sides: words are made from the middle or existing ones are snatched away and changed by one letter. Thus your CAT may become his CART which could be her TRACK seconds later.

Easy to post as a present.