Squarin' Off™, a game based on the old childhood game of Connect-the-Dots, but played with a level of strategy akin to Go or Chess. There single, double and triple-point squares. Complete as many squares by filling in all four sides and marking it while trying to give opponents as few squares as possible. Player with the most points (not necessarily the most squares) wins. There are "blocker chips" which eliminates a long string of squares.
 
Keep your eyes open and your wits about you.