According to a study by Cowen & Company, social games on mobile are diminishing demand for social and casual games on PC. In September, Japanese social giants DeNA and Gree showed how they are becoming a force to be reckoned with in the mobile social sphere, taking a third of the top 20 titles.

Other revelations from the top 20: Electronic Arts continues to fare well on the iPhone and iPad, while Zynga and Disney had difficulties hanging on at all. DeNA’s Rage of Bahamut saw its fifth consecutive month as the number one Google Play game, while Supercell’s Clash of Clans for iPad took the top spot in its second month and moved up to number two on the iPhone charts.

“We continue to believe that evidence suggests demand for PC-based casual social gaming is eroding due to the increased availability of casual gaming on mobile devices,” said analyst Doug Creutz.

For PC social games, Zynga’s FarmVille 2 pulled in 6.5 million daily active users, while Slingo, The Ville, Bubble Safari and CastleVille all saw slides. EA’s Sims Social and Sim City and Disney’s Marvel Avengers and Gardens of Time failed to make the top 20 games rated by DAUs.

Social gaming DAUs for the top ten publishers during September were only up by 0.8 percent. More concerning, monthly active users (MAUs) dropped by 9.9 million, or 1.8 percent.

Source: GamesIndustry International