Well, I really like Heartstone. It's quick and fun. But I've always been into card games (Magic the Gathering, L5R, Warlords, Vampires, etc.). I still have about 10 boxes full of cards at home
I used to play MtGOnline but like the paper original it is pretty expensive if you don't have the right connections and plenty of time to get there --> to the top...
I see that the Heartstone is free to play now!
There was a major update recently, which apparently moved it out the beta.
Check it out here:
http://eu.battle.net/hearthstone/en/
Both for Win and Mac OS.
There is an online store inside but there is really no need to pay a dime to get all the great cards. There is also the Arena, which is basically a draft and the better you play the better is the reward. Also there is online league.
Like I said, I like it a lot. I was really surprised to see that Blizzard made a card game.
Also there is no chat interface, so that you are not flooded by spam during the match and chatting is allowed only with people on the friend list.
Check it out for yourself
![Smile :)](./images/smilies/icon_e_smile.gif)