Excess Delivery is a side-mission in Grand Theft Auto: Chinatown Wars.
The Excess Delivery mini-game is activated by entering any one of two Alpha Mail delivery vans parked in two locations: Behind the post office in Middle Park East, Algonquin, and the Alpha Mail depot in Bohan Industrial, Bohan.
The objective of the game is to collect the designated package before rivals in four gang-based Burritos do, then deliver the package to the designated person. A henchman will also follow and protect you and the van from the rivals. There are 5 waves of packages to collect and deliver.
Once the player completes both Excess Delivery missions in Algonquin and Bohan, the player will unlock "Big Pants" - which doubles the carry amount of the duffel bag used in drug dealing.