Ninja Princess

Ninja Princess is a run and gun video game. The gameplay involves the player shooting enemies and defeating bosses along the way. Enemies include samurai, ninja and dogs. The player's normal weapons are an unlimited supply of throwing knives, but power-ups to shurikens are available.

In addition, the player can also turn invisible for a short period of time. While most of the stages are vertically scrolling, a few of the levels add some variety including a level where the player must scale a wall.

The game is set during Japan's Edo period, in about the year 1630, in a province called Ohkami in the western region, where the power has been seized by an evil tyrant named Gyokuro. The goal is to end his oppressive rule and restore peace.

In Japan, Game Machine listed Ninja Princess as the most successful table arcade cabinet of April 1985.

Computer Gaming World stated that the Master System version was the most entertaining of three martial arts games that Sega released together (the others being Black Belt and Kung Fu Kid), and approved of its unusual visual perspective.

In 2017, Sam Derboo of Hardcore Gaming 101 noted that Ninja Princess predates Capcom's genre-popularizing run and gun shooter Commando (1985), and he considers Ninja Princess to be "in some ways the more advanced concept." While he considered Commando to be a refinement of Taito's Front Line (1982), he said that Ninja Princess brought "a fresh setting and interesting new elements." He also praises the female protagonist, but criticizes the console versions for making the protagonist a male ninja who has to rescue her instead. He nevertheless considers it "no doubt one of the better overhead run-n-gun shooters out in the mid-’80s."

Sega Ninja is a plot point in the novel Ready Player Two (2020).