Eve online. It's a pretty fun space based mmo. The economy is 99.9% run by players. The other .1% are skill books sold at certain stations,. The screenshots are from the equivalent of a 10 man wow raid.

You can choose your own path in the game. You aren't limited by race or factions. Some people are pirates who attack and ransom peoples ships, others are traders.

The universe is HUGE with multiple systems designated by a security status. In .5-1.0 you are pretty safe. Any aggression will immediately trigger Concord Police response. They drain the aggressor's 'mana' and basically one shot them. There is low security which is .1-.4. This is where all the pirates are as they are kill on sight in any high sec areas. You are protected when around stations or stargates, but are SOL if you get attacked anywhere else. Null security space ranges from 0.0 to -1.0. Player Corporations (Guilds) can control huge patches of this space, putting up their own stations and home bases.

The game has a rather steep learning curve but once you get the basics down it's downright addicting.