Introversion has announced the availability of Alpha version 5 for Prison Architect. The build includes new features such as staff-only zones prisoners are not allowed to enter, and emergency service callout which includes firemen, and improvements have been made to the foundations tool. The firm said the tool improvements are now “much more intuitive and intelligent” to use. If you are not currently involved in the Alpha, you can join through here and gain immediate access to the latest build and all future updates, as well as a copy of the game when it is finished. A video of Alpha 5 is below.