Have you ever been duped into buying a game on Steam that looked good in the store preview, but was nowhere near as exciting when you sat down to play? Valve wants to put a stop to that. The company is telling Steamworks users that, once the developer tool's Discovery Update 2.0 arrives, all games on Steam will have to use in-game screenshots for their store image galleries. As Polygon notes, it's a simple matter of truth in advertising: Valve wants would-be buyers to know what it's really like to play, not just stare at concept art. It can be "harder for customers to understand" what they're getting without actual in-game content, Valve's Alden Kroll says.