Simultaneously popular and despised casual game developer Zynga is rumoured to be working on mid-core games based on the Unreal Engine.

Analysts including Colin Sebastion of Baird claim the company is refocusing following its poor share performance after joining NASDAQ earlier this year.

“This summer, we believe that Zynga will announce a new game slate, including ‘mid-core’ titles that should appeal to a broader audience of gamers, as well as sequels to existing franchises, such as Farmville,” said Sebastion.

The company’s shares have dropped nearly 38% since their debut.

Mid-core offerings would certainly broaden Zygna’s appeal, and the move makes sense in the context of Zynga CEO Mark Pincus’ recent comments that he hoped Zynga.com could become a service much like Xbox Live.