This is a very tiny simple game to practice how fast your reaction can be.
Once the gunman shows up,simply tap on the screen and shoot the gunman.Then your reaction time would be displayed.
You can also see your world rank on Game Center leaderboard.
If you practice enough, it may improve your skills in a lot other games like First-Person Shooter on console or ect.
So why not give it a try?
GO HAVE FUN~~