This site is the motherlode of free, interactive games.  There are thousands of flash games listed of all types.  My daughter enjoys the dress up section which allows you to put different clothes, accessories, make up and hair on assorted faces.  She also likes the role playing games that involve the challenges of serving an endless stream of customers in various scenarios.  There are many other beat-the-clock type games that are fun.  Some of the games are in a foreign language which makes them interesting to attempt to figure out.  But, they tend to be pretty straight forward. 

You may want to monitor the use of this site if you have young children playing because some of the games may not be appropriate for them.  In the alternative, you can go through the site by yourself and bookmark the sections you deem suitable for your kids.  There are many wholesome games for your childen to enjoy.