Street Wars, a massive city sprawling, water fight. 

The first attempt by Mr. Deane, the Englishman with four kills, involved the game’s version of a hand grenade: a water balloon. He went to the East Village home of his target, only to find it on the same block as the Ninth Precinct police station house. It was Sept. 11, and when officers spilled outside for a memorial service, they saw a scruffy character in a black trench coat holding a water balloon.