Portopia Renzoku Satsujin Jiken (Portopia Serial Murder Case) is a first-person murder mystery text adventure developed by Yuji Horii. Players input commands from a verb list and search on-screen graphics for hot spots to progress through the game.
The player takes on the role of a Japanese police detective tasked with solving the murder of a bank director. The silent protagonist is assisted by his colleague Yasu as he travels through real-life Japanese settings.