Word games such as crossword puzzles, hidden object games, Sudoku, puzzles and mazes—all of these help focus attention, build problem-solving skills and improve memory. Here are several articles and websites to give you more information on the benefits of playing online games.
Play a variety of games including mind games such as math and matching games, strategy games such as tetris and chess, and simulation games such as flight simulation. ( Free online games)
Here is an article outlining the benefits of online games for children. If your grandchildren love online games, they may be learning more than you think.
You’ll find the usual online games here plus some printable games that look to be a lot of fun.