LEGO Universe is a massively multiplayer on-line game that mixes LEGO Star Wars-style battle and build with a persistent, multiplayer game world where the player can do quests, collect, build, complete achievements, and trade. Characters in LEGO Universe follow a storyline that pits the malevolent forces of the Maelstrom against the forces of creativity and imagination.
As a player, you customize your LEGO mini-figure avatar and upgrade and enhance stats and appearance by collecting gear. Join one of four Factions (Sentinels, Venture League, Assembly, and Paradox) to earn specialized gear to further customize your appearance and abilities.
A mission and achievement system guides your character through various LEGO themed worlds, and each character can unlock his own private property, where he can build his own LEGO models, arrange them on the property, add "behaviors" to them which allow you to create interactivity. You can then share your property with other players.