Casino Night Zone.
It goes in the order of which the games were released; Green Hill Zone (Sonic the Hedgehog 1) Chemical Plant Zone (Sonic the Hedgehog 2) Sky Sanctuary Zone (Sonic 3 & Knuckles) Speed Highway (Sonic Adventure) City Escape (Sonic Adventure 2) Seaside Hill (Sonic Heroes) Crisis City (Sonic the Hedgehog (06)) Rooftop Run (Sonic Unleashed) Planet Wisp (Sonic Colours)
you have to play as sonic in zone 2 act 3.
Aquatic Mine and Iron Gate
With sonic as leader beat zone 2 act 3, and he appears after you fight gemerl. Amy is zone 4 act 3, and Cream is zone 6 act 3.
It's the fourth level in Sonic the Hedgehog 4: Episode II. It shares the same theme as Sky Chase Zone and Wing Fortress Zone from Sonic the Hedgehog 2.
Unlocked by completingSunset Hill (Zone 2), Act 3 with Sonic as team leader.
u hav 2 beat zone 2(sunset hill) act 3 with sonic as leader it wont work with other leader
Sonic Generations is not ALL of the Sonic the Hedgehog games. The games represented in Sonic Generations for Xbox and PS3 are: Sonic the Hedgehog (Green Hill Zone), Sonic the Hedgehog 2 (Chemical Plant), Sonic & Knuckles (Sky Sanctuary), Sonic Adventure (Perfect Chaos & Speed Highway), Sonic Adventure 2 (City Escape), Sonic Heroes (Seaside Hill), Sonic the Hedgehog (2006) [Crisis City], Sonic Unleashed (Rooftop Run), and Sonic Colors (Planet Wisps). The 3DS version features different levels from the Sonic Series: Sonic the Hedgehog (Green Hill Zone), Sonic the Hedgehog 2 (Casino Night), Sonic & Knuckles (Mushroom Hill), Sonic Adventure (Emerald Coast), Sonic Adventure 2 (Radical Highway), Sonic Heroes (Water Palace and Special Stage), and Sonic Colors (Tropical Resort)
get all 287 rings in the stage.
You need to use the sunglasses that are found in Meteor Herd.
grow up and get a life, stop playing babyish games
Dust Hill Zone was a zone that wasn't even implemented in the Simon Wai prototype, according to one of the teams of the then-Sega Technical Institute.