Hinge - Find people you want to date through your friends on Facebook.
Good Old Tetris - Play Tetris Online. The game that will never get old.
Cuddli - Dating for geeks
Blockinger - An open source Tetris clone for Android.
Tinder - Tinder is how people meet. It's like real life, but better.
NullpoMino - NullpoMino is an open-source action puzzle game that works on the Java platform.