Call of Duty: Modern Warfare 3 – Defiance is a 2011 first-person shooter video game in the Call of Duty franchise, developed by n-Space for the Nintendo DS. The game takes place in about the same setting as Call of Duty: Modern Warfare 3 and features many elements of gameplay typical to the series, including the usage of iron sights, vehicular missions, and online play. It is the last Call of Duty game to be rated T for Teen by the ESRB. It is also the last Call of Duty game to be released on the Nintendo DS.