Submitted 
                  by: Megacosm 
                This 
                  image depicts Green Hill Zone in its very early stages. Most 
                  noticeably different is the background. Instead of a nice backdrop 
                  filled with greens and so forth, it has some big mountains. 
                  Sonic sprite shown is also different, a tad skinnier as well 
                  as a pose not seen in the game. The level is also set at night, 
                  rather than day. 
               
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                Submitted 
                  by: Unknown 
                This 
                  image is fairly similar to the above, with the mountainous background, 
                  but there is also a sign in the level. It says, "Welcome" 
                  with what we think are Japanese characters under it. 
               
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                Submitted by: Desk  
                This is an image of Sonic riding on top of Eggman's wrecking ball. This is from the very beginning of act 1, so the ball must have been one of the first objects you encountered.  
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                Submitted 
                  by: Unknown 
                One 
                  of the main prototype thing sbaout Sonic 1 is at one point it 
                  would say "Ring" instead of "Rings" in the 
                  top left. Here's one of them, basically every picture has the 
                  same alteration in them. 
               
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                Submitted 
                  by: Unknown 
                Here 
                  the player is using debug mode to wander around as a ring. Also, 
                  the background at this point in the final game is different, 
                  possibly meaning the scrolling was once at a different speed. 
               
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                Submitted 
                  by: Unknown 
                The 
                  enemy that Sonic has just hit isn't there in the final game. 
                  Also the final has an invincibility shield instead of a life. 
               
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                Submitted 
                  by: Unknown 
                Here 
                  arere are 4 sets of 3 spikes surrounding this spring, but in 
                  the final there are only 2 sets, one on each side. 
               
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                Submitted 
                  by: Unknown 
                At 
                  one point in development the sunflowers had a pink centre in 
                  them, but in the final they're green. The happy ending of the 
                  final game does have one pink flower though. 
               
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                Submitted 
                  by: Unknown 
                This 
                  loop-de-loop has an invincibility shield ontop of it, but the 
                  final has a shield instead. The same area also has different 
                  background section due to the speed in scrolling. 
               
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                Submitted 
                  by: Unknown 
                Merely 
                  the "Ring" status is different here. 
               
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                Submitted by: Unknown 
                Again, "Ring" instead of Rings. 
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                Submitted 
                  by: ZikZak  
                From an old French Magazine, ZikZak has found this old image, Other than the "ring" change, Sonic seems quite off the middle of the shot, so this may be a production "painting", showing what the game would be like, or Sonic's somehow been able to be faster than the camera.  
               
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                Submitted 
                  by: Unknown 
                In 
                  the final game there is a rockTo the right of Crabmeat, and 
                  the item at the bottom lift, whateer it is, isn't in the final 
                  game. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring". This version also has green flowers, so it's 
                  further in development. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring". This version also has green flowers, so it's 
                  further in development. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring" instead of Rings. Again, "Ring". 
                  This version also has green flowers, so it's further in development. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring" instead of Rings, and the background is scrolling 
                  at different speeds. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring" instead of Rings. 
               
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                Submitted 
                  by: Unknown 
                Again, 
                  "Ring" instead of Rings. 
               
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                Submitted 
                  by: Gaming-Age.com 
                All 
                  that seems to be wrong is the "Rings" bit, the background 
                  seems a little blander as well. 
               
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                Submitted 
                  by: James Herriott 
                Eggmans 
                  giant checkered ball from the first boss of Sonic 1 was originally 
                  an obstacle in the game, which Sonic could ride upon. Also the 
                  picture says 'Ring' in the HUD, and not 'Rings' like in the 
                  final. 
               
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                Submitted 
                  by: Unknown 
                Heres 
                  a picture of Sonic passing Act 1, but notice how he's about 
                  to go into his 'launching' pose, seen in the sprites section. 
               
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