Like almost everyone before had mentioned, immersive environment usually relates back to virtual reality which could be a model after reality or something completely different as long as the person feels that they are immersed with it. By saying “being immersed”, I mean that they’d feel like they are part of the simulated universe. Several people brought up the idea of Sims 3 where “the user more or less [play as] God” (Val). This would allow “the user to create their own Utopia.” (Kelvin). That game is a great example of the user being immersed in the environment because as they play as the “sims”, they would generally control them as they would to themselves, going through everyday life in a virtual world which of course, is in a much faster rate than normal.
The higher the level of technology, the more real virtual reality feels like. This type of immersion is classified as Spatial Immersion (as Kayla had mentioned), where the user feels that the virtual world is real and looks real. This can eventually lead to a mental illness when they reach Psychological Immersion because that is when the user confuses the game world as the real world. it happens because they are completely focused on the game, forgetting that they have a body which is sitting in front of a computer or some sort of gaming console.
Then when they are finally off the game, in real life they are often thinking about their character and how “they have to fight the boss”. Also, when they start to think that they can’t die in the game and when/if they did, to them, that would mean “game over” meaning their own life is ending. This would lead to a period of depression because they were obsessed with the virtual world. In more serious cases, the player suffers from trauma of dying in a game that they may even commit suicide believing that they really did die.