Code Name: Viper is a side-scrolling action game for the Nintendo Entertainment System where players control Kenny Smith, an agent of the 98th Special Forces. Tasked with investigating a major South American drug syndicate, players must rescue a missing agent across seven hideouts while gathering clues to reveal the identity of the syndicate's leader.
The player takes the role of Kenny Smith, an agent of the 98th Special Forces, also known as "Code Name: Viper", who is assigned by his commander, Director Jones, to investigate a large drug syndicate that covers all of South America. Smith's objective is to rescue a missing Viper agent in each of the syndicate's seven hideouts and uncover clues of the Syndicate's true mastermind.