Kotaku reports on a practice by GameStop which allows employees to "check out" new copies of video games, play them, then return them to be sold as new
"When a shipment of video games initially arrives at a store, managers are told to 'gut' several copies of the game, removing the disc or cartridge from the packaging so it can be displayed on the shelf without concern of theft, according to our sources. The games are then placed in protective sleeves or cases under the counter. If a customer asks why the game is not sealed they are typically told the the game is a display copy. The game is still sold as new. When check-out games are returned, we were told, they are placed with the gutted display copies. If a customer asks about these, they are typically told they are display copies, not that they have been played before. Since the copies are often placed with display copies, even managers and employees typically don't know which of these games have been played and which haven't."