The forest is far from the most realistic game of its genre, especially when compared with some Green Hell, The long dark or Project Zomboid. There isn't much variety in the game. However, this does not stop it from being a great game; I would say that The Forest is more about exploration than survival. The plot of the game is good, but the main highlight for me are the mutants.
The mutants of The Forest are really creepy and interesting opponents, before I learned about them The Forest was not particularly interesting to me. I played through The Forest twice, and after the second time at the end of the game I was also able to experience a lot of emotions, especially in the final battle.