Entropia Universe is a virtual universe MMO with a micropayment system that gives items and property in the game real currency value. Hunt monsters, mine, level skills, buy deeds, and forge a corporate empire across six planets.
Type: MMO Virtual Universe
Release Date: January 30, 2003
Pros: +Huge, expansive world. +Robust economy. +In-depth creation system.
Cons: -Extensive tutorial. -Steep learning curve. -Numerous pay-to-play elements.