We Are Coming, Nineveh ! is a tactical/operational-level game of the Iraqi government campaign to liberate the western area of the city of Mosul from the forces of Daesh between 19 February and 9 July 2017. This was one of the largest and most difficult urban operations of the post-WWII era, and marked a major defeat for Daesh and its so-called “Islamic State.” The game is thus able to combine low complexity (and hence be accessible to even neophyte wargamers) with a rich and detailed treatment of this important battle. Unlike most wargames where there is a single measure for victory or loss, We Are Coming Nineveh assesses three key aspects of the campaign : the speed at which the operation is completed, the casualties suffered by Iraqi government forces, and the collateral damage done to Mosul. One might outperform the historical case, capturing the Old City faster—but at a terrible civilian cost.