OneShot is an adventure puzzle game that follows the adventures of Niko. At the beginning of the game, he wakes up in a dark and unfamiliar place. There is a computer in the room. An interesting feature will be that the machine will speak directly to the player, and not the character. The user's PC name will be used for this. The gameplay is a quest. The hero will wander through locations, explore and find various objects. Then you need to figure out how the things found can be used to solve the problem. They can be combined with each other or moved into the environment.

All OneShot levels are interconnected by a storyline. All events are revealed linearly, and new episodes gradually become available. The story becomes a little clearer when the protagonist finds a robot assistant. The prophet explains that the boy's appearance was destined by fate. He is the Messiah, and his main task is to return the sun to this world. The fact is that it has turned into a small lamp, and its light is not enough for a normal life. To complete the mission, you need to go to a high tower.

The pixel graphics in the game are made in a 2D style with a top view. The gamer not only controls Niko, but also acts as his companion. They communicate using a dialog box. In the end, it is the user who will determine the future fate of this game universe and character.