Google announced yesterday on Google+ the launch of Collectibles Week. For a limited time, Android gamers will be able to enjoy special in-game content for certain games that are currently available for download in Google Play.

While you shouldn’t expect epic items, you may as well have some fun discovering some of the exclusive collectibles that can be found in around 20 Android games:

Get your SIMS a new patio set this summer or add a Magic Store for your Dream Tower. You’ll also find items like Andro the Heroic in Tap Dragon Park, Android Monster in Monster Park, or a cool Android tee in Stardom.

The special promo is available for both U.S. and international Android device users, so mobile gamers across borders can already take advantage of it right away. But make sure you get your exclusives soon as the promo ends in six days.

Here are the games that are part of the Collectibles Week promo:

• Bakery Story
• Crime City
• Deer Hunter Reloaded
• Dino Life
• Dream Heights
• Dream Zoo
• Frontline Commando
• Hanging with Friends
• Homerun Battle 2
• Monster Park
• Pet Shop Story
• Stardom: The A-List
• Tap Zoo
• Tiny Farm
• Tiny Village
• World War
• Zombie Smash

Interested in any of these games?