The fascinating psychology behind free-to-play mobile app games | Consumer and technological trends in China | Scoop.it
From news.mohonaeds.com - October 30, 2014 4:32 PM

"If you've ever played a free-to-play game like Candy Crush, Plants vs Zombies 2 or Clash of Clans and defied the "free" part by parting with your cash, don't be ..."