I have this installed right now with Prison Overhaul, Laundry Fix, and Sleep Freedome. I will let you know if I have any problems. I have actually been doing this with a very small prison for awhile now. I would make a large escape proof ring. Transfer 2 people in from the names section and then wall them in and wait. But now I can use your mod and actually have a regular prison too! Thanks.

You can never make it big enoigh it says it needs to be 10x10 but i made it 13x13 and it said it still s not big enough
also keep up the good work and see if you can help the devs with this becasue this should be in vanila

@GamingDonkey I just went on and checked out what you were saying. I had no issue, I haven't modified it in anyway since release. The building must be indoors, the space within the indoors must be a minimum of 10x10. Be sure to cover the whole room with the Arena, or Training Room. Also be sure to have all items required. If you have anymods running after this mod it may effect this as well. I hope this helps, let me know if you still have an issue. Thank you for your support!

is it meant to be out doors

the grant starts locked and with the pre-requisite of prison boxing, making it impossible to unlock?
is this a bug or am i doing something wrong, i have no other mods installed.

@AztecNinja Have you unlocked the research for Prison Boxing?
@GamingDonkey The boxing ring and speed bag can be outside but the Arena Room, and Training Room have to be indoors.

this mod coflix with the computer and more mod could you pleace find away so it does not