Ninja Baseball Bat Man is a 1993 beat ’em up arcade video game developed and published by Irem. The object of the game is to recover various 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. Each player chooses from among four characters: Captain Jose, Twinbats Ryno, Beanball Roger, and Stick Straw. Up to four players can play simultaneously.
Like Irem’s previous beat ’em up arcade game, Undercover Cops, Ninja Baseball Bat Man features playable characters with several different fighting moves that sacrifices health in order to annihilate every enemy on the screen. The game allows players to perform combos, throws and dash attacks against several 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. There are items throughout the game that include American and Japanese food for restoring health, alternate weapons such as baseballs and shurikens, or items that call cheerleaders to either obliterate enemies on screen or drop a large amount of food. There are also mini-games after each boss before the final one is defeated.