According to SuperData, the amount that gamers spend on social gaming has dropped from $45.58 last year to $37.59 this year. Despite this, more users are going to be making payments, and the total will add up to $1.8 billion by the end of the year in the U.S. and $1.4 billion in Europe.

By 2015, SuperData expects the global social game market on both PC and mobile to hit $13 billion. The number of “mid core” gamers is increasing from 1.4 percent last year to 2.5 percent of social gamers this year.

“Mid-core social games are clearly driving the current momentum,” said analyst Janelle Benjamin. “This emerging genre represents a different gaming demographic that spends substantially more.”

Shooter and strategy titles continue to perform well, while the hardest hit games in the genre are from simulation games, like FarmVille. Offsetting the 18 percent drop in average sales per user is the increase in paid conversion, which allows for growth in overall revenues per title.