Bases Loaded is a baseball video game by Jaleco that was originally released for the Nintendo Entertainment System. It was first released in 1987 in Japan and in 1988 in North America, and a Game Boy port was released in July of 1990. The game allows the player to control one of 12 teams in either a single game or a full season. Bases Loaded featured a television-style depiction of the pitcher-batter matchup, as well as strong play control and a relatively high degree of realism, which made it one of the most popular baseball games of the early NES.