For my money, this is better than Clue, Black Vienna, Alibi. 3 numbers are drawn from a pack for each player. The possible numbers/colors are known to all players, but you don't know which three YOU have. Each player in turn draws and answers a question card ('How many green 7s do I see?') and when you deduce your own 3 numbers you get a point and draw three new ones. First to 3 points wins. Fast, simple, and designed craftily to provide plenty of opportunity for deduction. Makes you feel really smart when you get it!