Based on the xmas-card: https://github.com/dspinellis/xmas-card
The concept of this game is to avoid the shurikens, you can move the box left or right by using the arrows. If a shuriken hit the box its game over. Your score is the current number of shurikens on the screen.
In order to play the game you can just download the AvoidTheShurikens.jar from the releases.