To improve intelligence and cognitive functions why don't you try brain training with mind games foodle. Foodle is a fun word game that will test your knowledge of food and those who love to eat. There is only one puzzle offered each day, but participants can come from anywhere around the world. Each player has 6 chances to figure out a 5-letter secret word. You can figure out which letters might go together by guessing. The colors of the tiles provide players with information about how to proceed.