The RTS game from Introversion Software puts you in the role of a Prison builder at the beck and call of the Prison CEO. It is a charming game which integrates a heartfelt story, told by the medium of Polaroid shots and text. The demo had me building an execution building for Edward, a doomed school teacher who shot his wife and her lover after catching them in the act in bed. You build everything from the foundations up and can also controls the power circuits of the structure in utility mode. I was immediately captivated by the simple art style and accessible gameplay. This could certainly be a time sink on the scale of Minecraft. You can currently get an Alpha version of the game for their website, which is essentially a sandbox mode without the story. Introversion understandably didn't want details of the story to hit the internet before release date.