The Official Terraria Wiki said:Terraria Part 3: The Return of the Guide
Oh, thanks!http://tvtropes.org/pmwiki/pmwiki.php/Main/OddlyNamedSequel2ElectricBoogaloo
Its a joke term used to refer to the phenomenon where sometimes sequels tend to bring unusual or weird subtitles to the name. Its pretty much just a joke thrown into the copious splash names on the Terraria window bar. The joke only works if its on a sequel, so it couldn't just be "Terraria Electric Boogaloo". It has to be Terraria 2.
season 7, 6 six was tag 1 lolIts a reference to a minecraft series ''hermitcraft season 6'' its a tag game.