Play the most fun casual free-to-play Card game of all with the newly improved CardParty! Play against your friends, family or people from all over the world. Join friends who are already playing or make new ones. Win a round and gain coins, experience and achievements. CardParty is a game of skill and strategy. Outsmart your opponent, discard all your cards and win CARDPARTY!

Make sure that third-party apps are allowed on your device: go to Menu->Settings->Security-> and check "Unknown Sources"

Tap the APK file. Allow the app any required permissions it asks for. Then, at the bottom of the installer window, click INSTALL.

You'll see a confirmation the app is installed. Now you'll see the app available in your list of installed apps.