Eggman Empire

The Eggman Empire is a more moden structure of Eggmanland. The Eggman Empire is never built, or seen. Sonic Adventure was the final game to use the name Eggmanland (Robotnikland in english). The early cartoons (and archie comics) use the name Robotropolis as a Metropolis is a big city. In Sonic Adventure 2 the name Eggman Empire was used. This can be prosumed as two words in the back round while Eggman was broadcasting his threat say Eggman Empire and Robotnik Empire are present. Also in The Dark Story the scene is called Eggman Empire. Sonic X and Shadow the Hedgehog also use the name Egggman Empire. In the japanese dud of the movie his home city is called Eggmanland, in the english dub it is called Robotropolis. Sonic Heroes noe of the names are given mention.