The marketing firm Swrve estimates that about half of the revenue for mobile games is coming from less than a half of a percent of all players, which means that for some of these games, non-paying users, which is most people, are essentially pouring time into a game designed to hit the pain points of a small, susceptible group of players.
這時候,他們面前會出現一個選項:購買魔法石以保存所有的金幣和積分,而這些神奇石頭可以在商店裡用真實的貨幣買到。