You can unlock cars, tracks, and game modes in Driift Mania. Here's a list of the different conditions needed to do so.

MULTIPLAYER MODE UNLOCKS After every two or so races driven in multiplayer mode, the following items are unlocked (always in this order):

• Special car #1 (Tractor)
• Medium car #7 (Drifter)
• Small car #7 (Coupe)
• Special car #2 (Dragster)
• Meteorite game mode
• ... (rest is unknown)

CHAMPIONSHIP MODE UNLOCKS After every gold medal in a cup, you unlock the respective item (regardless of whether you get them in order):

• Small City: Special car #1 (Tractor)
• Small Hills: Meteorite game mode
• Small Oasis: Small car #7 (Coupe)
• Small Snow: Small car #8 (Caddy)
• Small World: Special car #2 (Dragster)
• Medium City: Medium car #7 (Drifter)
• Medium Hills: Arena track #1
• Medium Oasis: Special car #3 (Train)
• Medium Snow: Medium car #8 (Lambo)
• Medium World: Contamination game mode
• Heavy City: Heavy car #7 (Humvee)
• Heavy Hills: Heavy car #8 (Fire Engine)
• Heavy Oasis: Special car #4 (Kart)
• Heavy Snow: Special car #5 (Tank)
• Heavy World: Potato game mode
• Special City: Special car #6 (Hovercraft)
• Special Hills: Arena track #2
• Special Oasis: Special car #7 (Formula One)
• Special Snow: V.I.P. game mode
• Special World: unknown (Arena track #3?)

Additionally, by finishing every cup in first place, you unlock: Special car #8 (Crazy Duck)