Prison Architect is a top-down 2D construction and management simulation where the player has been hired by the CEO of a for-profit prison company to take control of building and running a prison. The player's role is of both architect and governor with sandbox micromanagement themes, where he is responsible for managing various aspects of their prison including building facilities, connecting utilities, and managing staff.
If that sounds interesting then you can currently obtain a free copy of Prison Architect on GoG. Simply head over to GoG, log in to your account and claim Prison Architect for free from their homepage.
At the time of posting you have the next 66 hours to claim a free copy of Prison Architect.