I don't know if anyone here is familiar with Eve Online? It is essentially a space mmo with a largely player-driven and emergent free market economy, playing host to hundreds of thousands of players in one giant server.
The reason I thought you guys might appreciate it is because I believe It does a good job of simulating a stateless capitalist society. Much of the regions are considered "nullsec" that is, have zero state laws or policing.
I have added a few links explaining the game, advocating eve as a stateless free market simulator, as well as some arguing against this.
http://justinandrewjohnson.com/gaming/eve-online-best-game-economists
http://justinandrewjohnson.com/gaming/econ-121-principles-eve-economics
http://justinandrewjohnson.com/gaming/The-EVE-Online-Monopoly-Part-1
http://www.rockpapershotgun.com/2014/05/21/eve-economist-interview/
http://www.engadget.com/2010/09/11/eve-online-player-steals-45-000-worth-of-isk-in-massive-investm/
http://www.pcgamer.com/nowhere-is-safe-in-eve-online-as-goonswarm-suicide-bombs-galactic-trade-hub/
https://libertarianismeve.wordpress.com/2014/06/18/how-eve-is-inherently-anti-libertarianist/
https://forums.eveonline.com/default.aspx?g=posts&t=242528
http://www.engadget.com/2010/07/25/eve-evolved-eve-onlines-not-so-free-market/
Your thoughts and opinions? Please add additional information if you wish