Richard Ramchurn, a graduate student at the University of Nottingham, has produced the best example of interactive cinema to date, which is influenced by the thoughts of its viewer. The film is called "The Moment", and there is no point in making an advertisement or a trailer for it - the viewer never knows exactly what will happen on the screen in advance.
The film has three main narratives and video sequences for them, for which the creators had to record three times as many frames and six times as many audio fragments. The computer, according to an unknown algorithm, selects two narratives and combines them, receiving signals from the viewer's brain, and the result is displayed on the screen. Ramchurn claims that his 27-minute experimental film has 101 trillion versions, so the likelihood of watching the same is extremely unlikely.
The main thing in this film is the obligatory presence of an operator, who is one of the spectators, wearing a NeuroSky MindWave headset. The system monitors his brain activity and can respond to what we would call mood. Accordingly, the color scheme changes in the film, frames, remarks, some scenes are added or removed, the voice acting is corrected, etc. The cinema will react to the change of the operator's thoughts, but how exactly, the author is silent.
This means that the viewers who come to the session will witness the state of mind of a person with a headset, which at the same time cannot consciously influence the film, because the interface does not allow this. It is not hard to guess that the result will most likely be a slight chaos on the screen, so Ramchurn does not intend to create a commercial version of an interactive film. He is interested in pure science, and in the near future the scientist will try to make a film that can be mentally controlled in cooperative mode, by analogy with playing in multiplayer.