Let's explore Evil Twin in detail when you start playing. Basic information about this game will be read on Itch.io or Steam.

I. THEME START MENU INTERFACE

This is the first place when you open the game (before that you may have seen the Pykatellar studio logo and the ESRB Rating logo for Mature). You will immediately see the scene in a place that looks like a bathroom, the main camera will be sitting on the floor. On your left is a slightly dirty white bathtub and the faucet is dripping with disgusting drops of blood, the bathtub also has a broken oval mirror leaning against the side to test the hand tracing reflection effect (if you turn it on, you will immediately see a reflection of a picture of a girl wearing a white kimono-like dress, a ghost face, a sewn-up mouth and horrifying blood, this picture is actually a framed photo placed on the wall behind the camera). To your right is a black living entity like venom and on the slimy surface there are moving veins, one root clings to the floor and the other clings to the ceiling like a tree, on its trunk are bright orange eggs (this egg will hatch into a monster). On the right wall is the door to this room. In front of the camera in the room architecture is a modern Japanese style window looking out is a rain, the rain is also red like blood, sometimes there is thunder and lightning. The camera is not static but moves as if trying to look up at everything in the room, when looking down right on the floor you will see the bloody horror style text of the game title with the note Early Access and Pykatellar Studio. The floor and ceiling seem dirty.

Now let's take a look at the UI/UX interface on the screen. In the lower left corner is a three-line text, line 1 is "Reduce resolution when lagging or stuttering", line 2 is "Early access includes 2 chapters out of 6 chapters with a total playtime of 2 hours", line 3 is "Bnar full release will be made on Flax Engine and have a total playtime of more than 10 hours". In the lower right corner is an option menu frame including 5 buttons arranged from top to bottom: Play button, Option button, Credit button, pykatellar.com button (access the home page), Quit button. Above the menu frame is the bloody banner logo seen on the floor as mentioned.

This scene menu has the instrumental background music of Sad made by Pykatellar studio.

II. SETTINGS INTERFACE

The language options frame includes English, Japanese, Traditional Chinese and Vietnamese. As a Vietnamese game, it must have Vietnamese, English is mandatory, Japanese is a game without Japanese, who would play it, and Traditional Chinese is because the studio has the contribution of design from friends from Taiwan. Next in the frame, there is also the option to turn on or off the bull's eye when playing, subtitle options, "Uncensored" option (if enabled, the overlay for 2ten 18+ content will be removed). The default three options below are off and English language.

The resolution frame, which only supports SD, HD, HHD, FHD, FHD+, 2K and 4K, will automatically select the one that fits the device screen by default. There is also a line displaying the scan frequency.

The sound frame includes three channels: total sound, ambient sound and background music. These are the 3 sliders that default to 0 for balance. If you reduce it to negative, it will be smaller, if you increase it, it will be larger, simple.

The graphics frame, first is the label that informs whether the machine supports Ray Tracing or just Medium. Next is the AO toggle option (a toggle button and a button for ray tracing), the Global Illumination toggle option (a toggle button and a button for ray tracing, however, it cannot be interacted with because it is on by default to display graphics required by the game), the Reflection toggle option (a toggle button and a button for ray tracing), the Refraction toggle option, the Soft Shadow toggle option, the Bloom toggle option and the slider adjusts from 0 to 1, the default is 0.2, the Motion Blur toggle option and its slider is the same as Bloom, the default is off, the Dept of field toggle option, the Gamma toggle option and the slider from -1 to 1, the default is 0 to balance the light. There is an option to enable or disable path tracing while playing, which creates high-quality, photorealistic images that are super realistic but render slowly (this mode is only available while playing, requires enabling while playing).

The control panel includes mouse sensitivity from 10 to 200 default 30 and instructions on the keys and mouse for interaction. Input Direct is not supported so the buttons cannot be customized, however if you want, use Steam Input Direct or an emulator if using a controller, the game does not support controllers, the official version is expected to have it.

There is a Reset to default button.

III. PLAY BUTTON

When pressing the PLAY button, two buttons will appear, the Continue to button and the small New Play button, arranged from top to bottom. If you press the New play button, everything will be erased and you will play again without mercy. If you press the Continue button, it will continue and if there is no save, it will start over.

Then the loading menu will appear.

IV. GAMEPLAY MECHANISM

Items are scattered everywhere, can be clicked to check almost rotate, aim, zoom the item to look through and then choose to exit the view or collect into Inventory. The movement and navigation keys are according to the current standard. When playing, it will automatically trigger and notify new instructions to help you not feel lost. Inventory consists of one side with 6 empty boxes where items are placed (limited to 6 boxes), the other side on the right is where the detailed content of the selected item is contained, including detailed information, use or discard buttons.

When opening the menu with the tab button, the interface will appear like on the Ipad screen, including the exit button, the settings button, the Inventory button and the IMess button which contains the simulated messages when playing. Press the M button to open the phone and you will see small fun demo tools simulating the phone (however, those tools do not work or only have symbolic functions, the main function of the phone is to turn on the flashlight and use the light to burn ghosts and magical entities). When turned on, the phone will be on the right side of the screen.

You can also use the TCS9 medicine to reduce stress and mental instability, this is a feature like Visage, if you do not take it for a long time, the possibility of a magical entity appearing and chasing you. There are two ways to reduce stress: take TCS9 medicine and heal by touching the golden pig model in the living room (only works once). When stress increases, a brain icon will appear in the lower left corner of the screen with increasing clarity.

You can hold down the left Alt button or press it once while moving to run. There will be a mechanism to run for a few seconds and get tired and wait until the mana bar increases to 30% before continuing to run. There is also a sound of tired breathing.

The phone also runs out of battery when turned on, it will run out every 2 seconds 1%. There are circular induction chargers on the table in many places, when charging, they cannot be used and charging takes a very long time.

There are puzzle games, you have to play to continue to overcome the challenge. Let's play.

V. PLAYING PROCESS

When you first enter, stand right in front of the hallway in front of the door, behind you is the shoe rack, turn on the light a little to make it brighter because it's too dark.

When you go to a notification that pops up to guide you through the game, you will not be lost. Read and understand what you will do, there is no way you do not know the buttons or how to interact while playing.

It's great, I understand and press the space bar to continue, I immediately see posters or messages on the wall, this is an interactive item, the two I see cannot be saved. I try to turn on the phone and it is true that there is a light but the phone unexpectedly may also be out of battery so I turn it off and the menu tab opens I see a message from my husband saying to visit the house and take a bath and eat cake, because I don't remember anything, I have amnesia and just got out of the hospital. The house is like in an apartment. There are only two people texting on the phone, honey and a stranger, I don't understand anything just look. The stranger said don't touch her things or else be careful, it seems like she is also a family member?!

Go into the living room and tour the house to trigger everywhere except the strange room upstairs that can't be entered, take a bath, I sit on the sofa eating cake and watching TV when suddenly the glass breaks then the whole house turns off except for the TV with the screen turned into horrible bumps followed by the doorbell. I go to ask if anyone is out there but no one says anything, I have to go to the power room to turn the power back on to see, when I go to the stairs someone says loudly that it's inside, and asks if I really don't remember anything?! I turn the power back on then the message rings, it's the name of the stranger who sent the few sentences earlier, he says loudly and adds that it's right behind me, I turn around and see no one, I text my husband that someone is following or bothering me.

When I get to the living room my husband texts that it's a post-traumatic hallucination so he tells me to take TCS9 and go to sleep. I did as I said when I got to the bedroom the doorbell rang again, I went out and shouted "Who are you, get out of my house now and don't make me crazy!". Then I went back to the bedroom and immediately when I closed the door a headless female figure in a black turtleneck dress appeared in the kitchen, I asked who it was then it immediately turned around and grabbed me, I used my phone light to burn it and it disappeared after a few seconds.

It was so creepy, I was tossing and turning for a while because I couldn't sleep, I went to the kitchen to check if there was anything and went to the living room to think for a bit then I went back to the bedroom, while going to the bedroom I realized that the picture on the wall next to the stairs had turned into a picture of three people, a man and two women on either side of him, the picture looked like a selfie. The man and the woman on the left were in my direction with distorted faces due to a Voronoi effect, and who was the other woman? I ignored it and continued to sleep but still couldn't sleep, I went out again and saw the ghost from earlier but it was on the floor and had a shape like someone was dragging it but no one was dragging it. I went closer and saw that body being dragged and it seemed like whenever I got closer to it it would drag me a distance, I followed it and it was true that it dragged me to the room of the stranger in the message. It was amazing but that room opened, I went in and the body disappeared. I explored what was inside and after playing with the Rubik's cube in the living room, I opened the cabinet and found a human skull, this was an item I couldn't pick up, I also took a diary, I read it and saw that it talked about the memories of someone named Ho Quynh Huong, not me talking about her with someone, the content was as follows: Ho Quynh Huong's diary on February 22, 2009,<br><br> Today is still a bad day after everything I've done. I thought they would be more desperate, but how could it be? He was clearly my only lover when I was in college. How many times have we dated, how long have we worked and worked on projects together, and is it all just a thing of the past now? <br><br> No, it's not my fault. It's all because of that girl. Where did she come from? She shouldn't be added to my story with him. <br><br> After graduating from college, my boyfriend and I bought a beautiful apartment. I confessed my feelings to him, but he still refused to see me and always tried to change the subject. One day, she walked into the house and everything fell apart. She said she was his girlfriend since high school. I spent a night talking to him about that girl and me, but that was ironic. He and I were just friends. <br><br> My jealousy and hatred reached their limits. We had many disagreements and conflicts, but he always stood up for that girl. Then one day, I heard that he and his wife were going to have a baby and that pregnant belly made my eyes hurt. After that, I gradually felt like I was being treated like a servant in the house. So I put poison in her water so she would miscarry and never get pregnant again. But how could they still be happy together? <br><br> Another day, I saw him sitting alone in front of the balcony with a bottle of wine. I went to comfort him and tried to remember the good memories between me and him. After that, things became more fair. Now she and I live together in the same house and he treats us like sisters. But we still have conflicts with each other and it was more fair. As things continued, I was sure that little girl felt very hurt. One peaceful morning like any other, he was busy with work so she and I had a sisterly conversation. I told her that I had an abortion and harmed her. I accepted what she could do to me. Seeing that little girl suffer like that, I was finally satisfied and felt better.

I also went into my husband's room and saw on the board that it was about TCS9 medicine, he is a doctor. It seems that he made medicine for me, however, I also saw a document that recorded the research process and a research subject named Ho Quynh Huong, the condition of this research subject was quite bad, it seemed that her cognition was getting worse, severe depression and hallucinations and false memories appeared, she looked at everyone and thought they were her family members. Could it be that the person in the diary was her and the room she stayed in was right in my house?! So the stranger who texted me was her?! Why didn't my husband tell me anything about her?! I went out and slept, when I got to my room door, at that moment an invisible supernatural power hugged me tightly so I couldn't move, that ghost appeared again and approached me, when it approached and touched me, I fainted because I was so scared. After waking up, it was already morning, I felt tired and went to the living room to rest, then the message rang, OMG, my husband is now texting me with strange content as if he was kidnapped by someone and asked me to come save him immediately, that was the tone of the kidnapper, he gave me an address and forced me to come in a week. The address was no longer in Vietnam but in Caranaires Island located in the suburbs of Caro city. I searched all the documents in his room to find more information and went there immediately.

That's the end of Chapter 1.

After I arrived, it was an abandoned house that looked very modern. I had read your documents and knew that this was the research facility of Py King, the group I used to work for. I didn't understand what it had to do with it, so I went in and saved my husband. When I arrived, it was already late afternoon, the sky was getting dark and dark. Strangely, the entrance door was wide open. I went in and heard the sound of water running in the shared bathroom. After I went in and checked, the door was closed. I went closer and saw a shadow of someone passing by, but when I went out, it was gone. No one said anything. Sometimes the lights kept flashing. I didn't know where the guy who had kidnapped my husband was. No one said anything. I checked everywhere. This house had 4 private rooms and a swimming pool in the yard. The two upstairs rooms were locked with keys and the other room was also locked, but it was a four-digit code lock from 0 to 9. Where did I get the code?! (This room is the secret ending, if you enter here the kidnapper's revenge plan is exposed and the game ends, he is here to control everything, if you enter you will see him disappear because he escaped when you opened the door, there is no document providing the door code but you can open the door by sitting and trying each one over and over again with the four-character code combination, use some combination math hihi), But let's go with the right process, I went to the kitchen then a voice seemed to be about the conversation of people in the past, including my husband, me and her, after listening I also remembered a few things.

A piano music (this song is called Where is my head?) sounded in the bedroom downstairs, I went to the bedroom door and saw the shadow from earlier, I opened the door and it was gone, but I immediately saw the key to a bedroom upstairs above the piano, I picked it up and the piano still played strangely for a few minutes. I opened the bedroom door but there was still no one. Because that room was not the room I wanted to enter, the room I wanted to enter had someone inside and the light was on, maybe my husband was locked in there. Because the door in this house was designed with blinds, I could see even though the door was locked. I went down to the living room and immediately, the piano music from earlier rang out again, I went and entered that room and boom, another ghost appeared. The ghost was floating on its two legs without moving but still moving, long black hair, wearing a white dress, blood was flowing from its face, its eyes were red and swollen and its mouth was sewn up cruelly. It chased me and tried to catch me, it kept muttering "Give me back my head" while it still had its head, is this the version with the head when the ghost was headless in part one?! Its voice was exactly the same. I played tag with it while solving puzzles, the puzzle was quite easy, it was to arrange comic style pictures on the wall in the right order, when this ghost triggered it, then it could interact, when taking the picture out of the frame, there was a number behind it, maybe this was the order in which these pictures told its story. There was no rule or instruction, I just arranged it randomly, then I saw that once it was in the right position, it couldn't take it out anymore, so I finished arranging and the ghost disappeared. A cicada chirping sound appeared in the living room, I went to check and saw a key on the table in the living room, it was the key to the room I wanted to enter.

When I got inside the scene of a card table and a meat grinder, where my husband was held captive inside the machine, I approached and the voice of the kidnapper appeared and forced me to play cards with him, he promised that if I won he would free my husband, if I lost he would kill him. He was locked up and stuck in that narrow machine with his mouth covered with tape, pitiful. According to the agreement, if I walked closer to my husband, he would grind my husband into sausage. After playing, I won, but if I lost, he would pump poison gas into the closed room and kill me and my husband. I won but nothing happened, he was also silent, I was no longer patient and kept walking closer and yes, that damn machine ground my husband into sausage, oh how cruel, finally he spoke and said why didn't you wait, what a bastard, who has waited for an hour. He left only his head, he wanted me to suffer this fate, I also remembered, he just wanted to protect that humanoid monster and take revenge on me. The story goes like this: Ho Quynh Huong chapter (1&2): Duy is a medical doctor and psychotherapist, he has his own pharmacy and a psychotherapy office, his business is not very good but it is enough to live. He does not have to worry about taking care of his family because his wife is Lan Anh, a talented girl and a scientist at Py King Group. Everything went smoothly until he went on a business trip and left the pharmacy and clinic to Lan Anh. Lan Anh secretly examined a patient with mild depression named Ho Quynh Huong. Huong and her family lost everything due to a traffic accident, she only had her brother to take care of her. Coincidentally, Huong's brother is also a scientist at Py King, but they are in different fields so they do not know each other. After the accident, Huong became depressed, her brother sent her to Duy's clinic. And it was pitiful that Huong accidentally became the subject of Lan Anh's research. Lan Anh prescribed Huong a devil's medicine, which made her depression worse, and worst of all, it destroyed Huong's memory and cognitive ability. She became unable to distinguish between dreams and reality. Distorted and fabricated memories appeared. When Duy returned, he was shocked by what Lan Anh did after looking at the medical records. If this was exposed, the possibility of him having to close the clinic was inevitable. They imprisoned Huong in a remote place (Py King's research facility, the abandoned house in chapter 2). Duy tried to reverse what Lan Anh did but it seemed that things were not simple. Those scary experiments continued until Huong and Lan Anh had a physical conflict with each other, Lan Anh pushed Huong down the stairs and ended everything. Duy and she were very confused, they decided to use Experimental Cell, a high-end virus based on a project led by Lan Anh, it can regenerate or enhance the vitality of everything from flesh. Huong was revived but in a half-human, half-monster form. It did not turn her into a zombie but she did not accept her current situation so she took revenge on Lan Anh. During that process, Lan Anh lost power, while Huong was about to eat Lan Anh, Duy from behind cut off Huong's monster head and finished it off. After this incident, Huong's brother assassinated Duy. So he was Huong's brother.

I hurriedly ran outside when a very strange monster voice appeared in my head and said it would help revive my husband, come to it.

And chapter 2 ended.