This is a wonderful and very unique place in Las Vegas.
There is a great retail store in the front, with a very nice selection of board games and accessories for sale. The staff is friendly and knowledgeable, and will explain/show you how to play any of the games.
In the back, there is a beautiful game library/playing room, with lots of comfortable chairs and tables. For a very reasonable price, you can spend the afternoon/evening with family or a group of friends, playing any of the games in the library-- there are over a thousand, so you'll certainly find something to try!