Heavily recommend you try and think about the game on your own time before reading this review fully. The following is my take on R11:

You, as the reader, have the ability to analyze the world of Remember11 as you see fit, but, occasionally, this ability will leak itself into a sort of omnipotence, an omnipotence of which you yourself cannot control. At times, this omnipotence is literal, in the form of choices prompted to the reader along the way made to guide one of our protagonists' actions. At other times, it's a lot more subtle, as the reader can pick choices that affect how characters other than a protagonist can act, whether it be driving them to insanity, picking what food they eat, or even something as simple as stressing them out, you have control over everybody. Your power is unlimited and unstoppable. You experience two character routes: One of the heroine, Kokoro, and the other of the hero, Satoru. Your interest is guided towards the former, after all, she's the character whose perspective you begin the story with, and so, you begin going through her narrative, swapping bodies between Kokoro in the mountaintop cabin and Satoru in SPHIA, trying to solve the various mysteries that come your way and survive through the harsh blizzard that torments Akakura Mountain as well as the murderer hunting you down on Aosagi Island. Along your path, you learn certain aspects of your other half, Satoru. You learn he dislikes pumpkin, that he hates having objects wrapped around his wrist, and that he was once in a relationship with one of the people stuck in the cabin on Akakura Mountain, all through the perspective of Kokoro, whose personality is switching bodies between herself and Satoru's. Unknowingly, this molds your perception of him; as Kokoro's narrative ends, this is where your knowledge of his character begins. Having finished Kokoro's chapter, you move on to your next target: Satoru. After having fallen off of a 15 meter high clock tower, he's lost part of his memories... or perhaps, your influence of the characters is so great and so strong... That your limited impression of him was cast upon him to form an entirely new identity, different from that introduced to us alongside Kokoro in the prologue. As he wakes up from his fall, there is not much he remembers about himself, that is, aside from what you, the reader, remember about him from hearing of him from Kokoro's perspective. He distinctively remembers his distaste for pumpkin, his dislike of wrist accessories, and his past relationship, but not anything else that you have not learned previously from other characters. It would not be unrealistic to say that you have created a new Satoru. Yet, you continue onwards, not realizing your own power and the misery it brings to others. You read and read, looking for answer, looking for an end to it all. You complete Satoru's chapter, but that, too, ends much like a bad ending does. You look back and try to fix what could have went wrong to give yourself the satisfaction of a solution, twisting these characters into demons just to obtain a drop of that sweet, sweet catharsis you long for. Each choice. Each bad ending. Each death, and each life. They no longer bear meaning to you, so long as you can find the single true ending you've been looking for... But it isn't there... No matter where you look, you are stuck in an endless loop. Your power, once limitless, is now tied down to the few characters before you. Your existence, once timeless, is now constricted to a single week, happening over and over again. Then you begin to wonder... Why? You recall that a man with sunglasses, previously called Enomoto, who is the person you surmise to be the real Satoru, as opposed to the blonde individual you assume the perspective of, treats you with contempt and hinted at a plan. You begin to wonder what his possible motives could be... Why would he despise you so? And what is this plan? Could it be the cause of this loop? During your thought, you recall one of the details you have unlocked on your endless journey-- the fact that this Satoru had a little sister, Sayaka. You attempt to piece together what you have learned so far, and remember a particular scene in the prologue. It was a scene soon after Kokoro was explaining the massacre of Awazumi Hospital, a horrible mass murder done by a girl named Keiko Inubushi. An image of her face was shown to you. She had a pale face with dark hair, big eyes, and raised eyebrows. The story continued forward to a flashback showing a girl with similar features, but much younger. She's in a hospital, talking to someone else. You are not sure who she is talking to, but she's afraid of something. Of what? Of herself, of the fact that she will kill someone yet again. It was at this point in the prologue you assembled this information together: Her physical similarities to Keiko, her background of being in a hospital, the possibility of a murderous personality lurking within her, and possibly even her voice, and you assumed, with little prior knowledge to go off of... That this girl is a younger Keiko Inubushi. However, upon recalling this scene, you realize you have made a grave mistake. This girl was once Sayaka and the person she was calling out to... was her brother Satoru. However, it is too late. Your ability has done away with the identity of Sayaka Yukidoh, and has instead replaced it with the horrible personality of Keiko Inubushi. Your perspective is now tainted. You cannot go back. You cannot pretend as if this revelation has never occurred. The more you try to not think about it... the more you firmly believe that Sayaka and Keiko are one and the same. Sayaka is gone forever. It is for this reason, this carelessness for human life that you clearly exhibit, as you constantly try to search for answers, ignoring the emotions and lives of the people you abuse to attain your goals, that you are stuck... in an infinity loop.

There is a lot more I can say about this visual novel, but I suppose you could say its existence itself is the best thing about it.