- Back to: Sonic Chaos (Master System prototype; 1993-06-30).
General comparisons
There is still no opening intro. The title screen immediately appears after the Master System BIOS.
While a title screen has been made for the Game Gear version by this point in development, there hasn't been one made for the Master System version yet, so this build uses a very barebones placeholder title screen that lists both the International and Japanese titles, the version number and build date.
Rolling demos are functional and will begin after waiting on the title screen for a few seconds, but no inputs have been recorded yet, so the demo player just stands there until the demos end.
The Zone Select is enabled by default, and is loaded after pressing any button at the title screen. Like in the 05-30 Game Gear prototype, Turquoise Hill Zone is mispelled as "Turquise".
What's interesting here is that the player can select any of the five Special Stages. Special Stage 5 is off-screen, but it can still be selected.
The background on the Player Select screen does not change colours yet.
Title cards are in, but they have a different colour scheme than the final. The Zone title is also aligned to the right rather than centered, and the Act number is not displayed.
The Continue screen does not display Sonic/Tails. Additionally, both Sonic and Tails start with three Continues each in this build. In the final, only Tails starts with Continues; Sonic doesn't start with any.
Gameplay comparisons
This build also has free movement enabled by holding down 
at any time during gameplay. If the player moves Sonic/Tails through an enemy or hazard using this, they will take damage after letting go of .
Like in the Game Gear prototype, the Bonus Panels always show Sonic before and after they've been spun, and the player still can't earn any bonuses yet. The music stops when the Panel lands on the ground rather than the instant the player touches it.
Sonic/Tails has a trail of stars behind him after the speed has been calculated at the end of Acts 1 and 2. In the final, they only have the star trail in Act 3.
Graphical comparisons
Audio comparisons
The death jingle is different.
Level comparisons
References
at any time during gameplay. If the player moves Sonic/Tails through an enemy or hazard using this, they will take damage after letting go of 
