You are Hunoui, who enters a lucid dream with a device. You experience six REM sleep cycles together with Yomogi. To escape or to confront—these two completely different choices will lead you to redemption or plunge you into ruin?

《Hyperthymesia》 is a first-person puzzle + role-playing game where you’ll encounter all kinds of bizarre phenomena: a parking lot that warps at random, a basement that shouldn’t exist, and even a girl buried deep in your own memories—she’s been waiting for you for a long time. Since you’re trapped in this uncannily vivid dream… why not set aside the chaos of reality, just for now?(Note: This demo features unique sound effects in select scenes, but no soundtrack yet. Approximate playtime: 15–25 minutes.)I am dreaming, having an incredibly clear dream. Perhaps to escape reality, after all, I can have everything in my dreams, but in reality, I never even have time. To be precise, time in reality does not belong to me, time in dreams will always belong to me.... lucid dreams? Can I control my dreams?Through an opportunity that I couldn't even explain, I came to realize the concept of lucid dreaming, which is knowing that I am dreaming and controlling what happens in the dream. Afterwards, I seemed to be possessed and wanted to experience lucid dreaming. The closest time I realized I was dreaming was when I opened my eyes. It was very dark around me, and I had never felt my room so dark before I have never truly entered a lucid dream, not even once.Until I learned about an instrument called the Dream Therapy Device, which can help me have lucid dreams, I customized an instrument in the physical store of the Dream Therapy Device. After a few weeks, I finally got the customized instrument .....I don't have a basement at home, I've never had one, and it's impossible to have one. I'm starting to feel a little uneasy. Everything did not develop as I expected, and I began to appear in strange scenes time and time again, all of which were scenes I had dreamed of before.I met a person who called herself Yomogi. She was in my mind and wanted to help me get out of here .....I saw Yomogi, she actually exists in my mind, she wants to help me leave here .....

Hyperthymesia

Hyperphymesia is a first-person puzzle and role-playing game. In the game, you will encounter various bizarre things: a randomly transforming parking lot, a non-existent basement, and even a girl buried deep in your memory—she has been waiting for you for a long time. Now that you have entered this extremely realistic dream, why not temporarily forget the trivialities of reality? The full version includes all 12 chapters unavailable in the demo, with a complete storyline. (This game contains a small amount of unsettling background sounds and no background music, with a total playtime of over 3 hours.)This work takes Hyperphymesia as its core setting and integrates it with the fantasy element of &quot;lucid dreaming&quot;. It is a fictional creation based on publicly available medical data, designed to serve the plot and puzzle-solving gameplay. The content differs from the actual experiences of real patients, and we hereby extend our sincere respect to relevant groups.I am dreaming a very lucid dream. Perhaps it is to escape reality—after all, in dreams you can have everything, but in reality, I don’t even have time. To be precise, time in reality never belongs to me, while time in dreams is always mine....... Lucid dream? Can I control the dream?By some chance that I can’t explain, I learned about the concept of lucid dreaming—it means knowing that you are dreaming and being able to control what happens in the dream. Since then, I have been obsessed with experiencing lucid dreaming. The closest I ever got was when I realized I was dreaming. But the moment that thought crossed my mind, I opened my eyes abruptly. The surroundings were pitch black; I had never felt my room was so dark...... I have never truly entered a lucid dream, not even once.Until I learned about a device called the Dream Therapy Instrument, which can help me enter a lucid dream. I customized one at a physical store that sells Dream Therapy Instruments, and several weeks later, I finally got my customized device......My house has no basement—never has, and never will. A sense of unease began to creep over me. Nothing went as I expected. I started waking up in strange scenes time and again, all of which were places I had dreamed of before.I met a person who called herself Yomogi. She was in my mind, and she wanted to help me escape from here......I really saw Yomogi. She actually existed in my consciousness, and she wanted to help me get out of this bizarre dream cage......