Superman leaps buildings, and Godzilla destroys them, but they both love spinning triple cherries.

Zynga today announced the launch of Spin It Rich! Slots, a free-to-play game for iOS, Android, Kindle, and Facebook. It is a sequel to the company’s Hit It Rich! Slots. Zynga’s slot division, which includes Wizard of Oz Slots, grew 78 percent during the fourth financial quarter of 2015 over the same period last year. Casino games are an important part of Zynga’s strategy to make an impact in the $34.8 billion mobile market. The social casino market was worth $3.3 billion in revenues in 2015, according to market analyst Eilers Research.

“Since launching in 2014, Hit It Rich! Slots has delighted millions of players, giving them an immersive way to interact with their favorite entertainment brands,” said Joe Kaminkow, chief game designer and senior vice president of slots for Zynga, in a press release sent to GamesBeat. “Spin It Rich! Slots builds on this beloved free-to-play experience by combining exciting mobile slots gameplay with the glitz and glamour found in casinos around the world. In addition to featuring Hit It Rich! Slots brands that our players love, such as Elvira and Sex & the City, we are thrilled to bring new branded reels to our players in Spin It Rich! Slots, including Godzilla and Superman.”

Zynga has had a hard time regaining the relevance it had in the early days of Facebook social gaming with the mega-hit FarmVille, but its slot division has remained a bright spot for the troubled company.