This is a casual game to satisfy your desire to slack off at work.
When you sleep at work, people would come near you.
By firing a cannon to control others to approach you, when hit by a shell, it changes the direction of the target's motion.
When no one is near you, you can feel safe to slack off (sleep).
If you make it to the end, you would get the Slack Off Master Medal.
Of course, if you're caught slack off at work, you would be fired.