Play Ninja Crusaders - Ryuuga (Japan) Online

Ninja Crusaders, released for the Nintendo Entertainment System in 1990 by Sammy, is a side-scrolling action game that arrived late in the NES lifecycle. It fits right in with the era's fondness for fast-paced, co-operative ninja adventures, offering a straightforward but chaotic experience that doesn't try to reinvent the wheel.

You control one of two ninjas tasked with stopping an alien invasion, moving screen by screen through urban and industrial environments. Your main objective is to fight through waves of robotic and monstrous enemies using a short-range sword or a limited, straight-firing bow. The game's signature mechanic is collecting orbs that allow you to transform into one of four powerful animals, like a tiger that pounces or a dragon that breathes fire across the screen; these forms are strong but temporary. The pacing is relentless, and the difficulty can feel cheap due to unpredictable enemy placements and sometimes awkward hit detection. It feels like a messy, unpredictable brawl where a lucky power-up can suddenly turn the tide.