Proto:Sonic Adventure DX: Director's Cut (GameCube)
From The Cutting Room Floor
This page details one or more prototype versions of Sonic Adventure DX: Director's Cut (GameCube).
Dated April 4, 2002. The changes made to the game for DX are still an early work in progress, with many features and maps still looking like the original game and a variety of debugging tools available to use.
A later prototype of the game that was sent out to reviewers. While this version doesn't have as many differences to the final as Preview does, it still has a lot of bugs and a very incomplete Chao system.