As its name suggests, Entropia Universe isn't an MMORPG based on one particular realm. Instead, it consists of several worlds within a virtual universe and relies on a micro-payment model. This means that players can purchase in-game currency and then convert the virtual funds back into real cash using a fixed exchange rate. Like Second Life, players can make and sell virtual goods, creating a virtual, thriving economy without the typical questing and character leveling seen in standard MMORPGs.
Current planets include the sci-fi themed Calypso and the rock-n-roll themed Rocktropia. Planet Michael--a world based on Michael Jackson--is expected to launch in late 2011.