Planet Calypso is the largest real economy Massively Multiplayer Online Game in the world. Players have the ability to participate in a unique virtual world where they only pay for the game when they play. Its innovative real money economy uses a virtual currency which has a fixed exchange rate with the US dollar. This allows players to deposit and withdraw real funds for their adventures on Calypso or in the real world.   It is also the first MMORPG to use CryTek's stunning CryENGINE 2 for amazing graphics and physics.  Planet Calypso is the oldest planet in the Entropia Universe and is free to download.

The Harbinger event, which will ultimately allow the players to determine its outcome, will take place from November 9th until early December.

In this limited time event, which will unfold in several stages, Calypso's colonists will face a new and evolved enemy invading the landscape of Calypso. Under direction from the military, colonists will have to recon, hunt and repel a technologically advanced new nemesis.  Is this relentless foe only here to hunt humans, or is it a harbinger for something far worse?

The Harbinger Event will feature new enemies to fight, a gripping storyline complete with new missions, a new environment, and an ending determined by the players. Colonists will be able to participate and find rare and valuable new items during the event. Those who take up the Harbinger challenge will also receive a special diploma from the Calypso Defense Forces documenting their part in the largest battle for survival ever seen on this planet. Since Planet Calypso is free to download anyone can simply download the client and get started defending the world.