If you haven't played in several versions, buckle up. At first I was slightly worried the game wasn't going to expand horizontally in terms of features, but holy ****. Introversion did not disappoint with these last few updates.
Alpha 11 is where I'd say the prison simulation is functionally complete, where all the conceptual pieces are there and work. Guys come in, they're whole individuals with lives and small back stories and personalities, and they eventually get released. The time compression means their actual stay can be short and that seems a little weird, but you have about 1 to 2 people leaving a day in minimum and medium security, so your prison feels much more alive.
What's really great is it's a simulation akin to Dwarf Fortress, i.e. it's not trying to tell you what to do for the most part. Gameplay is about meeting the needs of the simulation, or not and it reacts organically. Having everything and a full staff and a smart design leads to a well-run, problem-free prison. But if you want to run a gulag or what amounts to a death camp, where people live in filth and never see their families and fight each other for meager scraps of meat and their will is so broken they never fight, you can. If you want to have an intentionally over-crowded prison where riots happen all the time and you lose control of your prison and have to call in the riot squad, and prisoners leave in body bags as much as their own two feet, you can.
Hrm. Maybe now I get why I've gotten weird reactions to enjoying this game so much...
It's even managed to reach that level of story generation where interesting narratives just happen. Like you have a guy convicted of false imprisonment, and he's got his parents, a kid and his ex-wife. And only his parents and children come to see him. (Although some of the crimes vs. the ages are hilarious. Guys will come in with part of the time served, and if you do the math, some of them were committing money laundering and fraud when they were 11...)
Anyways, it's become a fine simulation, the tools are all in place to help you build and manage your prison...and it's just really great to see Introversion back on their feet and excited about a project after the demise of Subversion. And they said they still have a ways to go, like actually setting disciplinary rules for your guards, gangs and breakout attempts.
I almost always play in a sandbox fashion and hack my money and build most of my prison before opening up. So it's pretty easy to get your prison to run like a machine. The game is really tough if you play it as intended, because money is tight. I imagine there's going to be more random chaos injected at some point, so sandbox games aren't quite so calm.
This is what I put together in about a day, with a good template on hand.
How do I activate it with Steam? I can't find a key, only my forum account data in my inbox
You need to find your original download email. It should take you to your account page that has your Steam key on it.
Mine is titled "Order# XXXXXXXXXX", sent from Introversion Software.