Baseball is a video game from Nintendo. It was released December 7, 1983, after the July 15 launch of the Famicom in Japan. In 1984, it was ported to the VS. System arcade as VS. Baseball with additional graphics and speech, becoming a number one hit in Japan and North America that year. It was localized as a Nintendo Entertainment System launch game in North America in 1985, and in Europe in 1986. IGN said the universal appeal of the American sport made Baseball a key to the NES's successful test market introduction, and an important piece of Nintendo history. The game was also competing with Sega's arcade hit Champion Baseball, released earlier in 1983.

The Nintendo VS. System is an arcade system that was developed and produced by Nintendo. It is based on most of the same hardware as the Family Computer (Famicom), later released as the Nintendo Entertainment System (NES). As Nintendo was planning to release the NES in North America, they were aware of the video game crash of 1983 and its effects on the home console market. However by March 1984 the arcade industry recovered enough for a plan to introduce NES titles there, with the VS. System later being a presentation to players who did not yet own the console. It became the first version of the Famicom hardware to debut in North America.