Learn and play - for kids AND adults! All free sites.
French Games For Learners - Do the lesson, test yourself, and play the games: http://www.french-games.net
Digital Dialects (French) - Expand your vocabulary: http://www.digitaldialects.com/French.htm
Très Bien French - Games in French (Hangman, Whack-a-Word, etc.): http://www.tresbienfrench.com/games/en
Hello World (French) - Games, Puzzles, Songs, Maps, Culture, etc.: http://www.hello-world.com/French/