High Heat Major League Baseball 2003 is a licensed baseball simulation developed by 3DO, released in 2002 for PC and PlayStation 2. Part of a long-running series, it represents the second-to-last entry before the franchise ended. The game features officially licensed rosters and team names from all 30 Major League Baseball organizations, allowing players to field authentic squads across the full breadth of the MLB. Players manage and compete through standard baseball gameplay, benefiting from the real-world names and team identities that the official licensing provides. The title was one of 3DO's final releases before the company filed for bankruptcy in May 2003, marking a difficult end for a studio that had worked to establish the High Heat series as a competitor in the sports simulation market during the late 1990s and early 2000s.