Lett Sex For Those Who Love it - Let Sleeping Dogs Lie is a German word association game for those who love word associations and are able to learn them quickly. There are only twelve words in the game and the more you know about them, the better your score will be. You'll need to learn some of the meanings of the other words as well so you'll have a good idea what to do while your partner is blowing you. This game was developed by a group of researchers who made their research over three years and is free to all who want to try it. So, if you like word association and want to try to memorize a bunch of words quickly, then this game is just right for you to try..