Ninja Baseball Batman is an abstract, horizontally-scrolling beat-em-up for in which up to four players control a team of robotic baseball-star ninjas who must fight their way through a variety of levels, defeating the game's many enemies. The object of the game is to recover a number of artifacts stolen from the Baseball Hall of Fame, a task prescribed to them by the Commissioner of Baseball. Each stage takes place in several parts of the United States, with a boss character appears at the end of each stage. The game's enemies are themed entirely around the sport of Baseball; taking the form of Baseballs, Catcher's mitts, bats etc. The game also allows players to perform combos, throws and dash attacks against multiple enemies. When a player's health bar flashes red, more moves can be performed as long as the player does not restore or completely lose health. Health restoring food and drink items appear throughout the game, as well as throwable weapon pick-ups, including baseballs and shuriken. Occasionally players will find a pink heart, collecting this summons cheerleaders who either damage all on-screen enemies or drop a large amount of food. The four characters of "Ninja Baseball Batman" and their traits are: Captain Jose - Head of the team and technician. Well-balanced and a good choice for beginners. Twinbats Ryno - Very fast and wields two bats, but is the weakest of the four. Beanball Roger - He is a powerful buster, but not as fast as others. Stick Straw - A long-reach hitter, making him the best choice for long-range moves.