Spoiler: Potential Stages So the stages would be spliced together through story reasons, and I'm trying to figure out which combinations would be visually/musically interesting...
(Sonic 1) Green Hill, Star Light
(Sonic 2) Chemical Plant, Casino Night, Metropolis, Death Egg
(Sonic CD) Stardust Speedway, Metallic Madness, Collision Chaos
(Sonic 3) Angel Island, Hydrocity, Ice Cap
(Sonic & Knuckles) Mushroom Hill, Flying Battery, Sandopolis, Sky Sanctuary, Lava Reef
(Sonic the Fighters) Aurora Icefield, Dynamite Plant
(Sonic Adventure) Station Square, Emerald Coast, Windy Valley, Speed Highway, Sand Hill
(Sonic Advance series) Chaos Angel, Sky Canyon
(Sonic Adventure 2) City Escape, Radical Highway, Pyramid Cave, Green Forest
(Sonic Heroes) Seaside Hill, Casino Park, Grand Metropolis, Mystic Mansion
(Sonic Battle) Emerald Coast
(Sonic Rush series) Water Palace, Dead Line, Blizzard Peaks
(Sonic 06) Crisis City, Kingdom Valley, Aquatic Base
(Sonic and the Secret Rings) Night Palace, Evil Foundry
(Sonic Unleashed) Rooftop Run, Windmill Isle, Cool Edge, Dragon Road
(Sonic and the Black Knight) Misty Lake, Shrouded Forest
(Sonic 4 series) Lost Labyrinth
(Sonic Colors) Sweet Mountain, Starlight Carnival, Aquarium Park, Planet Wisp
(Sonic Lost World) Windy Hill, Honeycomb Highway, Sky Road
(Sonic Boom series) Bygone Island
(Sonic Mania) Studiopolis, Mirage Saloon, Press Garden
(Sonic Forces) Sunset Heights, Capital City, Mystic Jungle