Coincidentally, I was just thinking about the game Mastermind the other day... and specifically, how terrible I was at it as a child. It required logic and patience, two things I don't have a lot of now and certainly didn't back then. However, I did enjoy making colorful patterns on the board with the pegs, so I guess it's fun for everyone, in a way.
Get a free Mastermind game with 2 qualifying UPCs and $1.95 shipping/handling. This was a cereal box promotion, but the site where I found this offer gave two sample UPCs that work:
Do with that what you will.
(courtesy of Buxr.com)