After acquiring Fabrication Games for a mobile push and opening up a new studio in Barcelona, social gaming giant King.com has finally made its smartphone debut.

The firm has launched Bubble Witch Saga – which boasts 4 million daily active users on Facebook according to AppData – on iOS, with a further release on Android to follow.

King.com also claims it is the first Facebook game with progress fully sycned with versions on both iPhone and iPad, keeping track of leaderboards, scores, and virtual goods across all platforms.

Mobile matters

"As consumers and the industry focus more on games for mobile devices, launching a truly cross-platform Facebook game has been a top priority for King.com," said Riccardo Zacconi, CEO, King.com.

"We're excited to be the pioneers in making this available for our players.

"Gamers can play signed in or not and progress either way, enabling them to experience the excitement of Bubble Witch Saga whenever and wherever they wish, without losing their place in the game."

King.com now finds itself taking on other social studios that have made the leap to mobile, including the likes of Zynga and CrowdStar, amongst others.

At the beginning of July, King.com's Barcelona studio was unveiled to the world, with former Digital Chocolate executive Manel Sort leading the team's march into mobile.

It's not clear whether the Barcelona outfit has had any role to play in Bubble With Saga's implementation on iOS.