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Ytterbium - "the 2009 playworld" - characters, logos, names, and all related indicia are trademarks of ROBLOX Corporation, ©2009. Patents pending. Or something. Ytterbium is not affliated with Lego, ROBLOX, MegaBloks, or anything of those types. Shut up. Use of this site signifies your acceptance of the Terms of Conditions, which do not exist as of yet. See yourself out. Based off of GoodBlox, which uses the Jan. 2009 source