The Down Key is an item which was intended to appear in Resident Evil 0 during its GameCube stage of development but was removed in the final release. You can get it in the Biohazard 0 TRIAL EDITION with the help of cheat devices such as Action Replay MAX or GameShark; however, it is not usable anywhere and lacks a 3d model as well.

It is possible that this item was supposed to be used at the Marshaling yard to operate the vertical lift.

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