What happened

Sony implemented a controlled experiment on its PlayStation Store across more than 70 regions. Users were randomly assigned to "test" or "control" groups, resulting in price discrepancies for the same titles.

While the test primarily involved "dynamic discounts" (lowering prices for some rather than raising them for others), some players paid up to 27.8 percent more than their peers for the same product.

The test grew from 50 games to over 190, including major first-party hits like Spider-Man 2, God of War Ragnarök, and Helldivers 2.

Initially focused on Europe, Asia, and Latin America, the experiment eventually expanded to the United States, PlayStation's largest market.

Why it happened

The root cause was Sony’s desire to study price elasticity of demand: essentially testing how much "price sensitivity" different types of players have to maximise revenue.

Reports suggest the system used user metrics such as playtime, purchase history, and location to determine the "optimal" price. For example, lapsed players might see a steeper discount to entice them back, while active fans saw standard pricing.

Sony did not announce the test to the public. It was only discovered by third-party price trackers (like PSPrices) who noticed unusual "experiment identifiers" (e.g., IPT_PILOT) in the PlayStation Store’s API.