Let's hunt some cards!
I found out about this through mos who gave me a key for it. I am enjoying the game quite a lot, and it has the advantage of being playable on pretty much any computer, and I assume also pads. It runs through the browser but is surprisingly well made. It looks good and the gameplay is simple yet has deep tactics. I find it a lot more fun and rewarding than for example Scrolls.
If you want a second opinion, here is what RPS says: http://www.rockpaper...-3/#more-156395
It is currently in beta and you can apply for a spot, from what I hear you get in quite fast now. There will be a wipe before it goes live but you can play now and learn the game. It has MP of all types though I have not really tried that yet as I am still learning.
The game is free but has a paid currency (you bribe your GM with pizza) with which you can get ahead (but it is not pay to win since all items can be gained through playing). Realistically if you want to be "serious" you may want to spend a bit of money but it is completely playable free.
Have a look and sign up here: http://www.cardhunter.com/