The Nintendo Vs. System is a series of arcade ports of Nintendo Entertainment System home video games made by Nintendo. It was released in the late 1980s. The games are designed for two-player multiplayer. Some of the games were different from their NES versions. For example, "Vs. Super Mario Bros." was more difficult, having levels from the Japanese "" along with the "Super Mario Bros." levels. Others, such as "Vs. Duck Hunt", had better graphics.