The key change in this version is an overhaul of the Fog Of War system, in response to community feedback. Almost immediately after launching Alpha 3 we began to hear from alpha users that the rooftop style fog-of-war (which blocks out the view of the insides of your prison unless you have guards watching the area) was annoying because it stopped you from building things - you just couldn't see what you were doing.
Fog Of War Overhaul
Areas hidden by fog-of-war are now rendered in darkened greyscale instead the solid roof effect
Walls, floors and Static objects under fog-of-war remain visible but greyed out.
Guards and Cctv now have a longer view range.
The Chief has a long view range
Workmen, Cooks and Doctors have a short view range
The game is now more permissive when loading corrupted saved games. It will no longer crash.
Errors in the save file will be reported to debug.txt.