Prison Architect is a deep simulator in which players must build a jail that can house, feed, and keep an eye on criminal inmates. Players have to thwart escape attempts, keep them happy enough to prevent riots, and make sure they survive their stay.
However, five months after the game's official release, gamers have discovered a secret mode that puts the entire game in 3D.
In order to do it, on the Options screen, there's a near invisible button box on the lower left. Click it, and after a moment, the game gives the player a whole new perspective on their prison. The 3D mode is glitchy, which is probably why it's not an official mode.
Introversion's Gary Chambers tweeted when the 3D mode went viral:
Prison Architect was released last October and earned an 8.5/10 score in GameWatcher's.