This causes Sonic to start a jump a frame before entering debug mode, and performing said jump after exiting debug mode.
Sonic the hedgehog 1 beta code#
Big rings that lead to special stages have not been implemented completely yet, but code and art for it exists in the ROM.The timer resets to 9:00 if it reaches past 9:59. None of the levels contain checkpoint lampposts, as they have not been implemented yet.It isn’t possible to enter a special stage while in a level yet.Instead, Sonic leaps into the air from a jump after an act is complete with a unique sprite. End level bonus points have not been implemented.The music doesn’t stop when the game is paused.You can go back to the title screen at any time by pressing START + A.
![sonic the hedgehog 1 beta sonic the hedgehog 1 beta](https://r.mprd.se/media/images/39129-Sonic_the_Hedgehog_2_(World)_(Beta)-3.png)
In the final, you must collect 100 rings to receive an extra life however, unlike the final, you will not receive an extra life at 200 rings.
![sonic the hedgehog 1 beta sonic the hedgehog 1 beta](https://static.wikia.nocookie.net/sonic/images/a/ac/Title_Screen_2.png)
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 proto is confirmed to be sourced from a UK Magazine of the time.The ROM header hasn’t been populated with game specific information yet.