Missive - Team communication app now supporting FB, Twitter & SMS
Blockinger - An open source Tetris clone for Android.
Slack for Mobile - Rebuilt from the ground up
NullpoMino - NullpoMino is an open-source action puzzle game that works on the Java platform.
Hinge - Find people you want to date through your friends on Facebook.
Tetris Blitz - Race against the clock in a two-minute blitz to clear lines and rack up points before time runs out.