Niji Protocol

Niji Protocol is a retro-styled detective puzzle game in which you track demons disguised as human elites. The Demon Aristocracy is stealing artifacts from humanity’s history to decorate its underworlds, and you must identify and catch the thieves before time runs out.

The investigation

As a field agent, you follow a thief across a global map, gathering clues to work out their next destination and identity. You travel through 30 cities, from rainy Neo-Tokyo to frozen Toronto, investigate famous landmarks and interview local witnesses, including hotel concierges and street vendors. Clues include physical traits, currencies the suspect asked about and whether they fled toward a river or a mountain. Real-world geography, history and cultural facts help you determine where they went.

Identify and catch suspects

Enter the physical traits and habits you learn from witnesses into the Grimoire, which filters 24 High-Profile Demon Suspects. You must identify the suspect and issue a warrant with the Seal of Banishment before the final confrontation. At the suspect’s final location, correct paperwork lets you banish them; a wrong guess lets them escape with the loot.

Cases and progression

Cases are procedurally generated: the suspect, stolen artifact, flight path and clues are randomized for each investigation. You begin as a Rookie with a plastic badge and can work your way up to an Ace detective, unlocking harder cases and elite clearance levels.

Visuals and music

The game combines 1980s retro anime character designs with a high-contrast, blacklight-fantasy color palette. Its original soundtrack is tailored to the twilight of the 20th century.