

It seems that the demo was recorded for a different level layout. The demo after the title screen desyncs, causing Sonic to die instantly.The title card used for each level has “ACT.This is technically an “Act 4” for Green Hill Zone, and was most likely a way to test the ending area used before the end credits in the final game. Pressing B on any of the levels in the level select loads up a strange version of Green Hill Zone Act 3.The staff credit sequence, continue screen, and the ending sequence have not been implemented and do not exist in the ROM in any form yet.Clock Work Zone Act 3, Final Zone, and the ending level have not been implemented yet.Final Zone is missing from the level select.This seems to be a left over from when Star Light Zone wasn’t accessible from the level select yet. A cross was added next to all of Star Light Zone and Act 3 of Clock Work Zone, despite Star Light Zone being accessible.The original level names for Spring Yard Zone and Scrap Brain Zone are still present in the level select.Debug mode can still be entered by holding A button while selecting a level from the level select. There is no code for a level select cheat. For the final version, a level select code is used instead (UP, DOWN, LEFT, RIGHT, A+START). Level select can be activated by pressing A+START on the title screen.Sonic’s palette on the title screen is slightly brighter in comparison to the final build.This is absent in the final version, even though it’s still present in the game’s code. The title screen has a “PRESS START BUTTON” prompt.The title screen lacks a trademark symbol.The “Sonic Team Presents” screen is completely absent.The SEGA scream is absent and isn’t present in the ROM. The prototype uses a standard SEGA title screen commonly used in other games.The ROM header hasn’t been populated with game specific information yet.
