In this first-person 3D detective game, you play as a castaway who has been washed up on an island in a strange faraway place with no recollection of being on any trip. There is nothing on the island except you, a forest, and a small number of other individuals, all of which are waking up as you look around at the empty land.

Only one of these people can be trusted.

You are the Human. You have been isolated on an island with no memory of anything before arriving, and are among five other people. These people are known as the Deceiver, the Poisoner, the Betrayer, the Murderer, and the Innocent respectively. But you don't know which is which, and neither does the Innocent. It will only become clear who you can trust over a length of time, but the other four all know who the Innocent is, and are aware you are one of the others. Will you be able to identify the Innocent? Will it be too late for either of you by then?

--

The island you live on is beyond time and memory, and you do not need to eat or drink to survive. But you do need to sleep sooner or later. As the hours turn into days, certain behaviours will start to subtly emerge among the people: the Deceiver will attempt to exploit mental vulnerabilities in the group and extract the secrets of others for later blackmail; the Poisoner will fill everyone's minds with hatred and distrust through subtle suggestion and scandal, making them less likely to work together; the Betrayer will worm into someone's good books, then turn on them when they have nothing more to gain in favour of another, leaving them helpless and with nothing; and the Murderer will case a victim silently, patiently, before finally cornering and preying on them alone, without warning.

A way out exists for you and the Innocent; at the center of the forest, beyond the dangers of the others. Should you both make it to the center, a way out will appear before you and spirit you away from the island. But the Innocent will not go into the forest alone with anyone else until they trust them, and will instead stay on the coast, watching the others. The Deceiver will appear to be the Innocent through tricks and guile. The Poisoner will spread lies and make it seem like someone else is doing the poisoning; the Betrayer will zero in on another, playing harmless; the Murderer will stay where the victims are, revealing nothing of their intent.

It is your task to figure out who the Innocent is before either of you fall victim to the other four's traps, gain their trust even as the others try to do the same, and with them navigate to the center of the forest, alone. There, in the Innocent's and the Human's combined presence, an escape to the outside world will appear. But beware: if the person you have found is not the innocent, it most likely will be too late...

==

Image from Assassin's Creed IV: Black Flag (Ubisoft, 2013)