If you are playing specifically (perhaps on a legacy console or a DRM-free copy), you have a perfectly functional, enjoyable management sim. The DLC adds a couple of nice-to-haves but isn’t essential.
Do you need a for a crash in this version? Prison Architect 1.02 -35409- DLC
allows for more complex layouts involving roads or water, previously impassable obstacles in the sandbox. If you are playing specifically (perhaps on a