First Planet Company is a subsidiary of the MindArk group that develops, maintains and markets Planet Calypso, the first planet in the Entropia Universe. Planet Calypso is a Massively Multiplayer Online Role Playing Gamer (MMORPG), based on the Entropia Platform and is one example of the kinds of entertainment and services that can be provided through the Entropia Platform.

Set in the future, Calypso is a fictive planet which is home to an expanding human colony that is struggling to establish a new civilization. Participants can take part in the role-playing game and join the world in any number of capacities.

Users can download the necessary software for free and there are no monthly subscription fees.