Ninnin

Ninnin is a single-player game of one-on-one battles, set in Fifty City, where ordinary people and ninjas live side by side. You play as Ninnin, a child who survived an attack by the Hunter gangs with help from a ninja police officer. Inspired by that officer, Ninnin trained to join the ninja police and now enters a Hunter hideout to defeat the gangs threatening both their life and the city.

Fifty City

Fifty City was once peaceful, but Hunter gangs began causing incidents and accidents across the city. With only the police to oppose them and no military presence, the government recruited ninja mercenaries to fight the gangs. Their families also moved to the city, bringing ninjas and ordinary residents together. The attacks declined, but the Hunter gangs remained, so the government officially hired the mercenaries as ninja police to protect the city.

One-on-one battles

The game has three sections, each with four bosses. You fight each boss in a one-on-one battle; defeating all four in a section lets you advance to the next. Bosses use different skills and motions, and the backgrounds and boss designs change between sections.

Ninja abilities

You attack with Kunai and bombs, and can use double jumps and downward jumps—moves ordinary people cannot perform. The combat mechanics are straightforward. The number of available weapons increases by one as you clear each section, and the game includes a tutorial.