Mario Kart i

For the DSi.

Shell Cup

 * SNES Ghost Valley 1
 * GBA Riverside Park
 * DS Figure 8 Circuit
 * Wii Luigi Circuit

Banana Cup

 * SNES Choco Island 1
 * GBA Boo Lake
 * DS Shroom Ridge
 * Wii DK Summit

Leaf Cup

 * SNES Koopa Beach 1
 * N64 Wario Stadium
 * GBA Yoshi Desert
 * GCN Mushroom City

Lightning Cup

 * SNES Ghost Valley 3
 * GBA Bowser Castle 4
 * GCN Bowser's Castle
 * DS Bowser's Castle

Blue Shell Cup

 * Wii Toad's Factory
 * DS Shroom Ridge
 * GBA Snow Land
 * SNES Ghost Valley 3

Retro Tracks

 * The walls in SNES Ghost Valley 1 and SNES Ghost Valley 3 are now solid
 * Luigi Circuit removes the trick ramp due to their being no tricks in the game
 * DK Summit removes the trick ramps due to their being no tricks in the game
 * Mushroom City has less cars due to hardware limitations
 * Toad's Factory replaces the ramp off the factory with a cannon-like ramp