One of my favourite board games to play (with or without kids) is Carcassonne. I discovered this site – an unofficial one- that offers online version of different games.
Play Carcassonne Online
Go Here: ASOBRAIN GAMES
“Toulouse” is Carcassonne Game online
“Xplorers” is The Settlers of Catan online
“Match” is version of another of my favourite games, “SET” , and
“Barricade” is version of “Roadblock”
Note: to play you have to have at least version 1.2 of java. If you go to above sites FAQ section it will check to see if you have installed and direct you to site where you can get it.