One Late Night tells the story of an office worker who did not go home on time. The assistant to the graphic designer was earned and was left alone in the night office. The guy fell asleep tired, and when he woke up, he noticed that strange things began to happen around. The main goal of the player will survive until the morning, since only the light can help him get rid of these nightmares.

A location on one day a dark night will perform an office. It consists of a small corridor, from which the rooms depart. By gameplay, the hero will have to search the room in search of useful items and completing the specified tasks. Along the way, you need to escape from otherworldly power, which will try to absorb the soul of the character. The enemy appears suddenly. Sometimes the best way to survive will climb under the table and wait for the right moment.

The game does not have autosasal or other opportunity to fix the result. If during the passage of the hero they kill or the gamer himself will leave the game, then everything will have to be started from the beginning. However, all objects will lie in the same places, and a second meeting with ghosts will no longer make such a terrible impression. The general atmosphere is complemented by quiet music and periodically occurring sound effects. They can be random or become harbingers of an impending threat.