Social games pioneer Zynga has released a version of the hit FarmVille tailored for smartphones and tablets in the hope of reaping a bumper crop of players.
The San Francisco-based game maker - set on its heels by a shift away from desktop computers - is out to regain momentum with the mobile-format Farmville 2: Country Escape for iPhone, iPad and Android devices.
"Just as the original 'FarmVille' created a global phenomena when it launched, we expect the same from 'Country Escape,'" game general manager Jamie Davies said.
The original FarmVille will mark its fifth anniversary in June. More than 400 million people around the world have played the game, which has brought in more than a billion dollars in revenue for Zynga.
"FarmVille really put social gaming on the map," Davies said. "It has stood the test of time."
The new mobile version of the game was released globally in more than dozen languages.
Since tens of millions of people still play FarmVille with friends at Facebook, the mobile version connects back to the leading social network.
It also connects with Facebook rival Google+.
However, the mobile version of the game gives people the option of playing FarmVille without friends for the first time in the franchise, according to Zynga vice president of games Jonathan Knight.
FarmVille is essentially what it sounds like, in that players feed livestock, nurture crops, craft goods and virtually tend to other aspects of country life.
In the mobile version, "we've added more ways for players to team up together, help each other out and even compete," Davies said.
Zynga has made a priority of adapting games for lifestyles increasingly centred on smartphones and tablets. The new game takes advantage of touch-screen controls and play made bite-size to pop into spare moments in daily routines.
"We know people like to pull their phone out while in line at grocery store and fire up the game, quickly accomplish a goal and put the phone away again," Knight said.
Zynga in January bought mobile game and animation firm NaturalMotion for $US527 million ($A564.21 million) in a fresh reboot effort for the struggling social games pioneer.
Chief executive Don Mattrick said at the time that Zynga had in place a solid foundation for growth and was "excited" about playing competitively in the mobile arena.
Mattrick, who took over last year from co-founder Mark Pincus, said the company's Casino program with real-money gaming, and its Words With Friends game, were starting to deliver results.
Zynga rose to stardom by tailoring games for Facebook, but the two firms have grown apart as Facebook develops new revenue streams and Zynga seeks new consumers.
"We are really focused on growth and creating new hits on mobile," Davies said.
The new game is free to play, but people can spend money to speed up progress or for special farm items. Players can also form virtual co-ops and help one another out.
"People will always love growing and nurturing and taking care of virtual living things," Davies said of the enduring appeal of FarmVille.
"The game is designed to be a place were our players can escape to for ever if they want to."
