Sonic Adventure DX: Director's Cut/Hidden content

Through hacking, a number of discoveries have been made about Sonic Adventure DX: Director's Cut.

Unused Items

There are a number of unused objects in the game. These objects include a button (Aoki Switch) in Lost World, tumbleweed in Windy Valley, trash can in Speed Highway, and icicle in Ice Cap. Dude discovered these in the PC port of SADX.

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  Icicle object

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  Button, which has a push type and toggle type

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  Tumbleweed

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  Trash can

Duplicate Casino Geometry Data

If the player enters and exits the Casino area, copies of the casino geometry will appear at their global location. This can be seen by using debug mode to leave the playable area. It is believed that earlier in the production of Sonic Adventure, the adventure fields were intended to be one entire segment, instead of being split into several separate segments. This duplicate Casino geometry data is evidence that the adventure fields were originally meant to be one entire segment, but then segmented during production for efficiency. This Casino geometry data has incorrect textures, as it has erroneous texture references. It will frequently revert between textures, and sometimes even animate them.

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Station Square Hotel Keys

By using the Action Replay moon jump code to enter the Station Square hotel early as Big, the door to Emerald Coast will be locked. However, keys similar to the Wind Key or Ice Key will be found by the door. When placed in their appropriate sockets, the door will unlock. flarn2006 discovered this.

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  Translated, the text "What is this?" appears when Big picks up a key