Sure! Here's an example of a murder mystery game implemented in a single HTML file using JavaScript:
Murder Mystery Game
There are three people: Olimar, Bulborb, and Crayon.
Find out who the murderer is by talking to them:
(Don't tell them that the Bulborb did it)
To play the game, open the HTML file in a web browser (preferably on a smartphone for better user experience). The game will start automatically, and you can interact with the characters by selecting the corresponding option numbers. Follow the dialogues and try to find the murderer!