To install the Facebook Gaming: Watch Play and Contacts app on your android device, follow the following steps: Open the Google Play app. Tap the menu at the top right, and select "Apps". Choose Facebook Gaming: Watch Play & Connect from the list of applications. Tap or click on Install. After installation, tap or click on Open.
To play games on the Facebook Mobile web site, log into your android device as you normally would. Click the Downward Arrow on the top-right of the Facebook home page, then scroll down to the bottom of the Facebook profile area and click on Applications. You will then see an option for "Applications" which will take you to the section where you can check out the Facebook Gaming: Watch Play & Connect application.