This page contains GRID Unlockables for Xbox 360 called "Ninja Difficulty" and has been posted or updated on Jun 10, 2008 by iamkingcheats.
- Developer: Codemasters
- Publisher: Codemasters
- Genre: Racing
- Release: Jun 3, 2008
- ESRB: Everyone
To unlock Ninja Difficulty, get every trophy and complete every head-to-head race in Grid World
Please Submit a Problem for any incomplete, non-working or fake cheat listed above.