Please note VGF's cheat codes have relocated to the main page.

Sonic Adventure DX Director's Cut

Dr. Robotnik's Mean Bean Machine
Get 100 Emblems.
(Thanks to alynni@hotmail.com)

How to Get Metal Sonic
Collect all 130 sonic emblems
(Thanks to demigain@comcast.net)

Level Select in Sonic Chaos Unlockable Game
At the Title screen of Sonic Chaos, press Up, Up, Down, Down, Right, Left, Right ,Left, Start.
(Thanks to X-3)

Sonic Drift 2
Get 110 Emblems.
(Thanks to alynni@hotmail.com)

Sonic Triple Trouble
Get 120 Emblems.
(Thanks to alynni@hotmail.com)

Sonic Triple Trouble Level Select
In the opening cinema where you see Knuckles getting the Emeralds, press Start just as he collects the Redish-Orange one and you get level select.
(Thanks to X-3)

Tails Sky Patrol
Get 130 Emblems.
(Thanks to alynni@hotmail.com)