This is a sub-page of Proto:Sonic Adventure (Dreamcast)/AutoDemo/Stage Differences.
Casinopolis is in a very early state compared to the other levels, with the level showing off some very rough early models for it.
General#
- This stage appears to have been developed using Lost World as a basis, as Acts 2 and 3 have their respective backgrounds.
- Present on-screen is a floating point value representing Sonic's speed. It can be disabled by setting 8C833350 to 02.
- Sonic can enter "pinball mode" by pressing the Y button. While this functionality still technically exists in the final game, it is only for the pinball maps, meaning it can only be seen by hacking Sonic out of his pinball state, or using Tails.
Act 1#
The most notable feature of the early model for Act 1 is the "bunny girl" that would ultimately become the cowgirl in the Japanese release. The bunny girl is 3D unlike the cowgirl, who only appears on a billboard. The model of a bar that does not exist in the final can also be seen nearby.



Act 2#
Act 2 doesn't seem to have had any major changes made for the final version. The long path that goes unused in the final is present on the early model, however.
Act 3#
The early model for Act 3 (Sonic Pinball) is strongly resembles the final, on top of having some of its objects implemented.
- A complete tower can be seen to the right of the table, while the final removed everything but its bottom.
- The left side has some additional towers that were removed.
- The dividers are less round than the final.
- Two square structures in the middle of the table are missing.
- Some of the pinball mechanics have already been implemented, though winning the slot machine simply causes the wheel to stop.
Act 4#
The early model for Act 4 (NiGHTS Pinball) is very different from the final game, consisting of a long curved shape that looks nothing like the table used in the final version.

This model seems to be an early version of the scrapped pinball table that can be seen in early images for the game:
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Early Screenshots |
AutoDemo |
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