University Games Callisto Callisto is a seriously satisfying and undeniably simple game that requires strategic skills and a little luck to master To win, you must be the player who successfully places the most tiles on the board, while blocking others from placing theirs You must place your tile next to a tile of the same color For 2 - 4 players age 7 and up University Games offers you and your family creative games that are easy to learn and fun to play