Yahoo games has a section called "5-minute daily games" (you have to scroll down to the very bottom of the page). I really like their word roundup game. The Sodoku drives me nuts, but I do it anyway. I try the crossword puzzles, too. It helps me feel like my brain isn't turning to mush. But then....the games usually take me about 20 minutes instead of 5....so maybe my brain is mush!