A side-scrolling beat-'em-up platformer reminiscent of Sega's Shinobi, Bad Dudes vs. DragonNinja puts players control of street brawlers Blade and Striker (the titular "Bad Dudes") as they fight an army of ninjas to rescue President Ronnie from the titular DragonNinja.
The game received ports to numerous consoles and computers in the late '80s, the most notable of which is the Nintendo Entertainment System port (as it was a first-party Data East conversion).
The arcade version of the game later received two ports after Data East's bankruptcy: one for the 2010 Wii compilation Data East Arcade Classics, and a standalone digital release for the Nintendo Switch. The Switch version was released by Flying Tiger Entertainment on April 5, 2018, as part of the Johnny Turbo's Arcade series, and was later included in the compilation Retro Classix Collection #1: Data East on October 1, 2020 (as well as the 2-in-1 Pack with Two Crude).
|The boss is Karnov.|
|The boss is a clawed ninja named "Nenail".|
|At this point in the Famicom version of the game, the bosses begin to threaten the player before the beginning of the stage. The boss is a ninja named "Hanzo", a master of creating illusion copies of himself.|
|The boss is a gigantic man named "Animal", who is decidedly un-ninja-like.|
Karnov appears again in this stage, recoloured blue in the NES/Famicom version. Amusingly, he also turns blue in the Karnov game when he has been hit once.
The boss is a warrior named "Killer Joe" who wields a claw on the end of a chain.
|The boss is Kon Bousai.|
|All of the earlier bosses are fought a second time, with the finale being against the leader of the Dragon Ninja, coincidentally called "Dragon Ninja" himself, on a helicopter.|