there is no "forced to do something without any way to stop it" type of hypnosis. but real life hypnosis works as much as being immersed in a story works - you focus your attention on the text/voice/video, you forget about your surroundings, you lose track of time, you assept some things as true even if they would never happen this way IRL, you feel things you wouldn't normally feel by just sitting in your room or lying in bed. But unlike in a regular story, in hypnosis you are the main character, and your own body and your own feelings become part of the narrative. The main thing that a hypnotist does is they create a narrative and experience that you can focus on, and 'tasks' that you and your mind should be completing to move this 'story' along. And yes, people do feel 'pleasure waves' or other things during hypnosis - but that's just because they learnt how to let their subconscious manifest those feelings during trans (which is what "believeing" in hypnosis and "allowing" is all about).
but like it can be hard to follow one story, but very easy to immerse into another, so it can be easy or hard to fall into trans, depending on the tecniques hypnotist uses and your personal preferences. I personally perfer 'human' voice and keeping my eyes closed, so this game isn't really my cup of tea, but it still was fun while it lasted (which was very short, 'cos the "game" part of the game doesn't work on mobile <.>)