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 Super Mario Bros. 2 along with the Super Mario Bros. levels. Others, such as Vs. Duck Hunt, had better graphics.