Beddit - A new kind of sleep tracker (No wearable sensors)
NullpoMino - NullpoMino is an open-source action puzzle game that works on the Java platform.
Juvo - Track & manage sleep from under your bed
Blockinger - An open source Tetris clone for Android.
Play2048.co - Puzzle game written by 19 - year old Italian designer Gabriele Chirulli based on 1024.
Good Old Tetris - Play Tetris Online. The game that will never get old.