Hearthstone: Heroes of Warcraft, the free-to-play digital card game, is now available on iPad in Canada, Australia and New Zealand, Blizzard has announced.

Launches throughout the rest of the world are promised soon.

"Hearthstone's player base has already grown to more than 10 million registered accounts following the official Windows and Mac release, but we saw that a few people online were holding out for the iPad version," said Mike Morhaime, CEO and co-founder of Blizzard Entertainment. "Instead of calling those folks up individually, we figured we might as well let everyone know that the global iPad rollout for Hearthstone has begun, and pretty soon it'll be available everywhere.

"The game is a natural fit for tablets - we encourage everyone to check it out on their couch, in their backyard, in a coffee shop... or anywhere else they take their iPads."

In addition, Blizzard has confirmed that the Windows and Mac version is now available globally, while Android, iPhone and Windows tablet versions are also in development.

Source: Press release