HA/CK is inspired by puzzle games like Portal; it takes you within The System where you need to hack and travel successfully while inside.
It consists of six levels of varying degrees of difficulty. You start in the training matrix to bring you up to speed on how to navigate while inside The System. The System is vulnerable, things like lifts access panels and security cameras are open to being hacked. When you encounter an item that is potentially hackable, the internal software will display a green ring around your vision center to confirm the vulnerability.
In each level, you will need to figure out how to successfully follow the instructions provided and it is done through a point and click process.