The phrase refers to a category of video games designed for the Nintendo Entertainment System (NES) that accommodate two players simultaneously and are considered to be enjoyable. Titles falling under this classification often provide cooperative or competitive gameplay experiences. An example includes Contra, a run-and-gun title where two players can work together to defeat enemies, or Double Dragon II: The Revenge, where two players cooperate to defeat the final boss.
The availability of games supporting two players was a significant feature of the NES, contributing to its popularity. These titles fostered social interaction and collaboration among players. The shared experience of overcoming challenges or competing against each other added depth to the gaming experience, driving replayability and establishing lasting memories.