An alternate coloration of the same image, the description being erroneously changed to "Interior of a blimp."
Early concept artwork of the Metropolis Zone.
Early concept artwork of the Metropolis Zone. Text refers to the Zone as "Sonic sweat shop."
Early concept of the Metropolis Zone. Windows can be seen.
Early concept art of the foreground for the Metropolis Zone.
Early concept of the background for the Metropolis Zone. Furnaces can be seen.
The unused diagonal elevators for the Metropolis Zone.
Concept of the diagonal elevators for the Metropolis Zone.
Concept of various elements in the Metropolis design
Concept of various elements in the Metropolis Zone. Drawn on STI letterhead.
Concept of various elements in the Metropolis Zone. Drawn on STI letterhead.
Concept of various elements in the Metropolis Zone.
Concept of various elements in the Metropolis Zone.
Concept of various elements in the Metropolis Zone.
Concept of the gears in the Metropolis Zone.
Concept of the gears in the Metropolis Zone.
A list of obstacles slated the Metropolis Zone, including those unused.
Early Metropolis Zone Act 1 map. Has diagonally slanted rotating steel drums. Very different from final. Only two things seem very similar to final; the general starting area's position, and the downward ramp leading to the
Goal Plate area.
Early Metropolis Zone Act 2 map. Has giant
crushers. Very different from final. The only recognizable areas are the immediate starting area and an area with a half-loop leading to a ramp in the top-left.
Another Metropolis Zone Act 2 map.
Early Metropolis Zone Act 3 map. Has a diagonal elevator.
Early Metropolis Zone Act 3 map. Features a horizontal spike obstacle, similar to the ones removed from
Marble Zone.
Early Metropolis Zone Act 3 map.
Early may concept by
Hirokazu Yasuhara showing the game's setting. It shows early versions of levels featured in the final game as well as some levels that never got through development. This map illustrates the Ancient Times.
Early may concept by
Hirokazu Yasuhara.
Sonic the Hedgehog 2 was going to have time travel in the story and would had the player travel to different time periods for each level around the island. This map illustrates the Medieval Times.
Early map concept by
Hirokazu Yasuhara. This map features the altered Present Time after Dr. Eggman alters the past. To travel through time, Sonic had to find and activate hidden Warp Points.
Early map concept by
Hirokazu Yasuhara. This map illustrates the Ruined Present, after Dr. Eggman took complete control over the island. Now every location has been turned into an industrial factory or city.