Ninja Kid II is a 1987 arcade action game developed by UPL, serving as the sequel to the original Ninja Kid (also known as Mutant Night in some regions). Released during a period when the arcade market was saturated with action platformers and run-and-gun titles, UPL carved out a distinctive niche with fast-paced, vertically scrolling gameplay that set it apart from contemporaries. By 1987, arcades were hosting heavy-hitters from Capcom, Konami, and Taito, making it a competitive landscape, yet UPL's title found an audience thanks to its energetic design and accessible two-player simultaneous mode.
In Ninja Kid II, players control a young ninja protagonist tasked with battling waves of supernatural enemies across multiple scrolling stages. The game employs a top-down or isometric-leaning perspective with vertical scrolling, a format UPL had refined through earlier titles. The control scheme is straightforward: a joystick handles movement in eight directions, while attack buttons allow the player to throw projectiles — primarily shurikens or similar ninja weapons — and execute close-range strikes. Power-ups scattered throughout stages can enhance the player's attack strength, speed, or grant temporary invincibility, rewarding exploration and risk-taking during hectic enemy encounters.
Stage structure follows a loop of increasingly difficult rounds, with each stage populated by a variety of enemy types that grow more aggressive and numerous as the game progresses. Boss encounters punctuate the experience, demanding pattern recognition and precise movement to defeat without exhausting the player's limited lives. The enemy roster draws heavily from Japanese folklore and supernatural imagery — a hallmark of UPL's design philosophy — giving the game a visually distinctive character compared to more militaristic or science-fiction-themed contemporaries.
The two-player simultaneous mode is a central feature, allowing a second player to join and tackle the game cooperatively. This cooperative dynamic was a strong draw in the arcade environment, where pairs of players could pool resources and cover each other against overwhelming enemy formations. Friendly fire is not a concern, making the cooperative experience accessible and encouraging rather than punishing.
In its era, Ninja Kid II was received as a competent and entertaining entry in the action genre, appreciated for its colorful sprite work, responsive controls, and the chaotic fun of its two-player mode. UPL's games were known for a certain frenetic energy and quirky visual style, and Ninja Kid II delivered on both counts. While it did not achieve the lasting cultural footprint of flagship arcade titles from larger publishers, it maintained a loyal following in Japanese arcades and found players internationally through import cabinets. Its difficulty curve — steep but fair — gave dedicated players a meaningful challenge to master, contributing to repeat play and coin investment, the ultimate metric of arcade success.
