
The sniper will also win the match if the timer hits 0:00 before the spy has completed all of their missions. If the person killed is a civilian, the sniper will lose the match. If the person killed is the spy, the sniper will win the match. If the sniper deduces who the spy is, they then have the ability to take a single shot and kill their target. The sniper must closely watch the party in order to determine which player is the spy, either by witnessing missions, abnormal AI behavior, or other various tells. The sniper is shown a list of possible or guaranteed missions that the spy is required to complete depending on the chosen settings while setting up the match. The sniper has a specific area in which they can move around to observe the party and has binoculars with two levels of zoom to get a closer look when wanted. The sniper views the game through a first-person perspective of a character located outside of the party area.

The spy can also win the match if the sniper kills an innocent AI. In the scenario that the countdown passes 0:00 on the timer, the countdown will continue until completed. If the spy completes all of their missions, there is a 10-second countdown shown only to the spy which when depleted will cause the end of the game and the spy to win. When attempting an objective the spy is given an action bar test which determines the subtlety or success of the attempted mission by the player's ability to time the test correctly. A countdown starting at 3:30 is also shown as the time limit, but can be increased by the spy with a certain wristwatch action while playing which Hecker has also described as being a taunt type action within the game. The spy is shown a list of objectives on their screen which will show their progress on each available mission or their completion. The player being the spy has a third-person perspective of their character with the ability to freely move the camera and their character. After both players have agreed upon the game, the match is launched. When a match is created between two players the player who has selected to be the spy has the option of choosing the map and the mission objectives for the game, with potential handicaps for either the spy or sniper depending on how many objectives are shown or need to be completed. It is the spy's objective to complete a certain amount of missions within a given time limit while the sniper has the objective of identifying and killing the spy with his one shot before the missions are completed. In SpyParty, the player takes control of either a sniper or a spy in a two-player match.
