Secret Service is a first-person shooter that starts on Inauguration Day for the next president of the United States. He is attacked and takes a shot to the stomach. The player assumes the role of agent Pierce, a member of the Secret Service, as insurgents attempt to overtake Washington D.C. Next to the shooting gameplay there are small puzzle elements that involve unlocking doors and defusing bombs. These puzzle section are played out as in Pipe Dream: Pierce must connect wires to chips to progress through the game. These puzzles increase in difficulty as the game progresses.