We bought Othello last week and have played it every day since, usually multiple times a day. It's a game that my 7-year-old is asking to play -AND- a game that I enjoy because I find it every bit as challenging as he does. (A rare combination!)
The game is for two players. The object is to have the most discs on the board with your color turned up (discs are black on one side, white on the other). When you flank the discs of the other player, all the discs in that row are captured and are flipped over to reveal your color. It takes minutes to learn but the strategies involved are complex. I'm only beginning to figure it out. So far, we've learned that capturing corners and edges seems to be particularly important.
We played an app (iTouch/iPad/iPhone) version of the game called Tournament Reversi before we bought the board game. I found it extremely challenging. (If it's easy for you, please don't tell me!) The app helped us learn how the game works; however, I've found the board game to be better for strategizing. The app turns the pieces over so fast that it's hard to fully understand the effects of your move. With Othello, you have to turn the pieces yourself and clearly see the results...whether you like it or not. ;)
You can also try Reversi on-line.
Educational ties: problem solving, spatial skills, logic
Disclaimer: I bought my own game and have no contact with the company that produces it. If you use the Amazon link to buy your own, a small commission (at no cost to you) is donated to Grace & Hope. My blog policy, however, is that I don't blog about things that I don't like. Our whole family is enjoying this. :)