Play Hissatsu Shigoto Nin (Japan) Online

Hissatsu Shigoto Nin is a Japan-only Nintendo Entertainment System release from 1990, developed by TOSE and published by Irem. It arrived late in the NES lifecycle, a time when developers were still finding new ways to challenge players within the hardware's familiar constraints.

You control a ninja tasked with infiltrating a series of heavily guarded castles to assassinate specific targets. Movement is screen by screen; you must observe enemy patterns, hide in shadows, and use tools like smoke bombs and shurikens to create openings or eliminate guards silently. The game demands patience and precision, as being spotted often means instant failure and restarting the stage. Success hinges on memorization and careful execution, making each completed mission a quiet victory earned through observation and timing.