For one week, Google is promoting Collectibles Week, an initiative to drive in-game sales for over 20 games in the Play Store. Using the psychological and persuasive technique known as scarcity, Google hopes to get gamers to buy or unlock limited edition items within these games. After the week is over, those items will no longer be available.
The collectible items range from Android themed clothing for Stardom: The A-List to a special gilded rifle, gold knuckles, and lots of gold for Crime City. Collectibles Week ends this Friday, so get your collectible item now.
Participating games are slightly different between the U.S. and internationally. Click the appropriate source link for your list.