CROSSBLOCKS, "epic revival", characters, logos, names, and all related indicia are trademarks of ROBLOX Corporation, ©2009. Patents pending. CROSSBLOCKS is not sponsored, authorized or endorsed by any producer of plastic building bricks, including The LEGO Group, MEGA Brands, and K'Nex, and also ROBLOX itself, and no resemblance to the products of these companies is intended.