John Davison, who works at video game company Red Robot Labs, says free-to-play smartphone games like Candy Crush Saga and Puzzle & Dragons have become brilliant at using these tests to figure out how to get people to spend money.
John Davison, who works at video game company Red Robot Labs, says free-to-play smartphone games like Candy Crush Saga and Puzzle & Dragons have become brilliant at using these tests to figure out how to get people to spend money.