You can claim three Hearthstone packs free right now

If you log onto Hearthstone today, you're in for a big surprise. Namely, three free card packs for new expansion Kobolds and Catacombs.

Blizzard is giving them away as a slightly-delayed way of saying sorry for some server teething issues before Christmas.

I can't remember ever being affected by server issues and have played a lot of Dungeon Run, the new single-player rogue-like experience.

The free packs will lie in your Battle.net client's gift section for a month - make sure you claim them while you remember.

Haven't yet dabbled in the world of Hearthstone? Our Christian Donlan dipped his toe into Dungeon Run and found it a canny tutorial for the whole game.