(Series: Track Theme: Circuit Name)
Sonic: Seaside Hill: Whale Lagoon
Billy Hatcher: Blizzard Castle: Icicle Valley
Sonic: Casino Park: Roulette Road
Samba de Amigo: Carnival Town: Sunshine Tour
Jet Set Radio: Tokyo-to: Shibuya Downtown
House of the Dead: Curien Mansion: Outer Forest
Sonic: Final Fortress: Turbine Loop
Super Monkey Ball: Jumble Jungle: Treetops
Billy Hatcher: Blizzard Castle: Rampart Road
Sonic: Final Fortress: Dark Arsenal
Samba de Amigo: Carnival Town: Jump Parade
Sonic: Casino Park: Pinball Highway
House of the Dead: Curien Mansion: Sewer Scrapes
Sonic: Seaside Hill: Lost Palace
Super Monkey Ball: Detritus Desert: Sandy Drifts
Jet Set Radio: Tokyo-to: Rokkaku Hill
Samba de Amigo: Carnival Town: Rocky-Coaster
Jet Set Radio: Tokyo-to: Highway Zero
House of the Dead: Curien Mansion: Deadly Route
Sonic: Seaside Hill: Ocean Ruin
Sonic: Casino Park: Bingo Party
Billy Hatcher: Dino Mountain: Lava Lair
Super Monkey Ball: Pirates Ocean: Monkey Target
Sonic: Final Fortress: Thunder Deck
If you were bored enough to read all of that, you'll notice that Sonic isn't the only franchise with multiple visual areas, but it still has by far the most stages (Super Monkey ball has 3 different visual themes, Billy Hatcher has 2, and there are enough changes to the Jet Set Radio and Samba de Amigo ones to feel pretty different). A couple things that stood out to me from watching videos:
- The Monkey Ball stages are full of 90 degree turns, mimicking their inspiration, making them extremely hard. Monkey Target, in particular, has this spot.
- Though they're called "Seaside Hill" and "Casino Park", the latter two circuits of each start to get a bit of thematics from their counterparts, Ocean Palace and BINGO Highway. There's even the Bingo cards on the final Casino Park stage, albeit 4x4 instead of 3x3, and the BINGO Highway music track itself is unlockable, unlike Ocean Palace or Egg Fleet.
- Seaside Hill: Lost Palace is the stage from the 360, PS3, and DS demos.
- Though all the Samba de Amigo stages are listed as Carnival Town, the Rocky-Coaster circuit has much different thematics.
- Seaside Hill: Ocean Palace is mostly underwater transparent tunnels, which is pretty cool.
- Final Fortress: Thunder Deck is referred to as an "out of this world spaceship" by the announcer, and indeed, it does remind me of Unleashed's opening...
- The DS version is rather impressive, especially with how they translated the rehashed music.
- Only the menu and ending music aren't rehashed. Everything else is from other games, no matter how unfitting (such as "Blaze Appear" from Rush as the track complete theme for Casino Park).