Murder Reaction and Cleanup

Over the past two weeks, I added lots of new features to the game! Most importantly, NPCs will now to react to witnessing murder! Currently, they will run away and call the cops, which can result in a Game Over if you don’t dispose of the evidence before the cops arrive.

Murder Reaction Progress

  • After an NPC observes you committing murder or standing next to a corpse while bloody / armed / insane, they will attempt to flee the school and call the police. (This is the “Coward” reaction, and will not be the only type of reaction to murder.)
  • If the police are called, a timer and a checklist will appear at the bottom-left corner of the HUD. The timer displays how long until the police arrive, and the checklist informs the player of what they need to do to avoid arrest.
  • After the school incinerator has been activated, a little clock appears that displays how much more time is remaining before it can be used again.
  • It is now possible to clean up spilled blood and bloody footprints using a mop. The mop gets more bloody with each use.
  • The mop can be cleaned in a tub of water. The tub of water can be picked up, carried around, and placed anywhere.
  • When changing from a bloody uniform into a clean uniform, a bloody uniform is dropped onto the ground.
  • Bloody weapons and bloody uniforms can now be disposed of by tossing them into the school incinerator.
  • After the police arrive at the school, the results of the police investigation are displayed as text.
  • It is possible for Yandere-chan to be arrested by police and get a Game Over.

Other Progress

  • Added a katana to the game to test non-concealable weaponry. (The katana attack animation is a placeholder.)
  • It is now possible to customize Yandere-chan’s hair texture, face texture, and arm texture.
  • A drumbeat track now plays whenever the player is chasing down a fleeing student.
  • It is now possible to put an eyepatch over either eye, not just a single eye.
  • After the school day ends, the game advances to the next weekday.
  • Dead NPCs now eventually run out of blood and stop bleeding.
  • Yandere-chan can now have 7 different hairstyles.
  • NPCs can also have 7 different hairstyles.
  • NPCs can now have different bust sizes.
  • New easter egg!

Bug-Fixing Progress

  • Fixed a bug that would duplicate weapons in Yandere-chan’s inventory when she was near Senpai.
  • Fixed a bug that would occur when attempting to drag a corpse while already dragging a corpse.
  • Fixed a bug that would occur when carrying a weapon and a corpse at the same time.
  • Fixed a bug that would cause ragdolled NPCs to slide backwards when offscreen.
  • Fixed a bug that would cause Yandere Vision to become permanently activated.
  • Attempted to improve the quality of the “maniacal laughter” animation.
  • Due to the discovery of a graphical bug that occurs when the game is played at aspect ratios other than 16:9, I had to remove the ability to play the game at any resolution that does not have a 16:9 aspect ratio. I’m very sorry! I’ll try to fix the bug and restore support for all aspect ratios in a future update.

March 1st Bug Fixes

  • It is no longer possible to chat with a student if you are carrying an item (causes too many bugs, doesn’t serve a gameplay purpose yet).
  • It is no longer possible to chat with a student if that student just watched you murder somebody.
  • It is no longer possible to chat with a student if you are currently standing on top of a corpse.
  • You can now use the B key to lower the music volume and the N key to increase the music volume.
  • The “chase” drums now only play if you are chasing someone who has seen you committing murder.
  • If you quit the game and load it up again, you will return to the beginning of the week.
  • Fixed the bug that would prevent Yandere-chan’s CustomFace.png texture from appearing.
  • It is no longer possible to knock over a bucket of water by swinging a corpse into it.
  • You can now kill an NPC by tapping the attack button rather than holding it down.
  • The “Police Investigation Results” screen now goes by twice as fast.
  • Previously, when an NPC died, their breasts would return to the “default” size. Now, an NPC’s breasts are the same size in both life and death.

March 2nd Bug Fixes

  • Fixed a bug that would cause the “police investigation results” screen to not display any results.
  • Fixed a bug that would prevent the incinerator from acknowledging corpses inside of it.
  • Fixed a bug that would prevent the player from attacking NPCs while standing near a corpse.
  • Added crouching / crawling and began to implement a camera (these features are currently incomplete).

March 3rd Bug Fixes

  • It is no longer possible to accidentally trigger the incinerator while performing the mopping animation.
  • It is no longer possible for blood to spawn outside of the school, where it can’t be mopped up.


The video at the top of this blog post tells you almost everything you need to know about NPCs reacting to murder and how to get away with your crimes, so I highly recommend watching it.

An NPC’s reaction to murder depends on their personality. The currently-planned personality types are:

  1. Coward (Flees the school, calls the cops.)
  2. Teacher’s Pet (Runs to nearest teacher, tells teacher about the murder.)
  3. Social Butterfly (Runs to nearest group of students, calls the cops.)
  4. Fragile (Becomes terrified of you, begs you to spare their life in exchange for their silence.)
  5. Evil (Congratulates you on your kill, promises not to say a word about it to anyone.)

If an NPC calls the cops, a timer and a checklist will appear at the bottom-left corner of the screen. The timer shows you how much time you have until the cops arrive, and the checklist tells you what to do in order to avoid getting arrested; dispose of the corpse, dispose of the murder weapon, dispose of your own blood-stained clothing, and mop up all the pools of blood you’ve left behind.

After the police arrive at school, the player can no longer control the game’s protagonist. Yandere-chan could not defeat the police in a fight, and could not hide from the police forever. The police would also instruct all students to remain in their classrooms while the investigation was taking place. So, controlling the character would be meaningless at this point. Once the police arrive, the screen goes dark, and the player is shown the results of the police investigation.

When there is evidence that a murder took place and evidence that you did it, the police will arrest you. The police will also arrest you if there is evidence of a murder and Yandere-chan’s Sanity is below 66% (which causes her to alarm and frighten the people around her, and causes the police to take the murder accusation more seriously perform and a more thorough investigation).

In the current build of the game, there are unique results for all of the following circumstances:

There will be exponentially more results added with each new feature added to the game (for example, framing a student by planting the murder weapon on them would produce different results than the ones above).


Last week, I added a new feature – the ability to change the color of Yandere-chan’s clothing and legs. Now I’m adding the ability for you to customize her hair, face, and arms, in addition to her clothing.

Like before, you can modify her textures by placing files in the “StreamingAssets” folder. There is a file in that folder named “How To Add Custom Textures.txt” that should explain what to do, in order to see your custom textures show up in-game.

I also added several new hairstyles to the game that can be accessed by hitting the “H” key on your keyboard. There are also some other new accessories that have been added to the game, but they are easter eggs, and you’ll have to figure out how to unlock them on your own…


When the clock strikes 6:00 PM, the school closes, and all students still lilngering at school must leave and go home. When the schoolday ends, the player will see a “Calendar” of sorts, and watch the weekday roll over to the next day of the week.

The protagonist is supposed to eliminate her rival by 6:00 PM on Friday. If she doesn’t, then the rival will confess her love to Senpai, and Yandere-chan will lose Senpai forever.

In the current “sandbox test build” of the game, the rival does not officially exist, so it is currently impossible to avoid a game over.

185 thoughts on “Murder Reaction and Cleanup

      • I’m not sure what the problem is. Nobody else has reported this problem. For me to know what the problem is, I’d probably have to watch you play the game. Can you record a video of yourself playing and upload it so I can watch and see what’s happening?

  1. Hey, maybe I’m just a dumbshit, but when I try to access YanSimMar3rd_Version2.exe it tells me that it cannot find the data folder, despite the data folder being right next to it. I have tried redownloading several times. Anyone have any idea what I’m doing wrong?

    • That is super bizarre. I downloaded it and tested it myself and I couldn’t replicate that issue. I don’t know why you’d be running into that error. If you download previous builds from earlier blog posts, do you get the same problem?

      • Yeah, I tried opening the Jan 15th build and still get the “data folder not found” despite clearly being there. If nobody else is having this problem it’s probably something wrong with my computer. A real shame, the game looks great so far! I was looking forward to trying the stuff you’ve already done.

  2. I’ve followed this for a while and just came to check what’s new after losing contact for a bit… this has gotten much better since the first “sandbox” you put out. While other things are keeping me from trying it out, this has certainly kept me interested for the full package. Keep going with this; it’s looking pretty good!

    • That’s so weird. I don’t know why you’re getting that bug.

      What kind of keyboard are you using? Is it a “QWERTY” keyboard? The “R” key on your keyboard may be different from the “R” key on mine…

  3. Normally you can kill the very last student coming into school as she walks down the path without any of the girls noticing, but something odd just happened to me. I killed the last girl walking in and almost immediately hit backspace to go to the end of the day once she hit the floor. The text screen came up, as usual, but that little clip that plays in the corner when a girl sees you kill someone played over it, once for every girl left alive, in succession.

    • Wow, that sounds extremely bizarre. Well, the shift key debug functionality won’t exist in the final version of the game, so this probably isn’t something that I’ll need to address. I wonder if it’s possible to get this bug to happen “naturally” by killing a girl in the second immediately before the clock strikes 6:00 PM …

  4. By the way, I just noticed the end screen text sometimes changes between past and present tense! You might wanna look into that.

    • This is somewhat intentional. Sometimes the end screen text is describing what the police did, and sometimes it is describing how this is presently a problem for Yandere-chan, and what this means for her future.

      There may be some instances where this is unintentional, though.

  5. For some reason I could interact with the other NPC at all(I could kill though), is there something i could do about it?

    • To interact with an NPC, you must not have anything in your hands (like a weapon or an item). You can hide a weapon or drop an item by pressing “1” on the keyboard. If you are playing the game on a gamepad, you would press “Down” on the D-Pad.

      After doing that you hold down the “E” key (or the “A” button on gamepad) to talk to an NPC. Does it work if you try?

      • I tried that with out having a weapon at all, most of the option was grayed out and the only option that work is apologize. Anyway Love your game bro, if it comes out I’ll buy it ASAP. ^ ^

  6. One thing I’ve noticed with yandere vision, is that when one aura overlaps another, the aura behind the first aura will change colour. For example by looking at a green aura through a red aura part of the green aura turns yellow. Purple turns the green aura white.

  7. I don’t like to bother with unnecessary questions, but you said you made it possible for the player to crawl and crouch. I can’t really figure out which button(s) that does this…

  8. I got my tri-tails, toast, scissors and a cute crouch walk….ready or not senpai here i come!!!!

    Great update yanderedev love the new features especially the reaction to murder and the evidence clean up, keep up the great work!!!

  9. Let’s see i got my tri-tails, toast, scissors, and a cute crouch walk….ready or not senpai here i come!!!

    Great update yanderedev love the reaction to murder, evidence cleanup and hair, keep up the great work!!!

  10. I found out one bug and another one that I’m not sure if it’s a bug or just to be done, but if you run while using the crouching button, the camera starts bouncing up and down between the camera mode “Standing” and “Crawling” if I may say. The second thing is that Yandere’s senpai doesn’t react to the sight of blood or weapon, I dunno if the latter is a bug though like I said. Other than that, your project looks real great and sounds very interesting. Keep up the good work buddy and I hope you have as much fun making it as we are exploring your creation🙂

  11. google drive says :

    Sorry, you can’t view or download this file at this time.

    Too many users have viewed or downloaded this file recently. Please try accessing the file again later. If the file you are trying to access is particularly large or is shared with many people, it may take up to 24 hours to be able to view or download the file. If you still can’t access a file after 24 hours, contact your domain administrator.

  12. anybody else have the problem of killing on a floor other than the first, only to find the blood has “fallen” through the floor to ground level?

  13. Im having trouble here, the google drive one says the quota has been reached and to wait 24 hours to download and the MEGA one requires a decryption key..? Can someone help pleasee

  14. In the game, when killing people on higher ground (upstairs) the blood seeps onto the ground floor. That also means, during the stairs, there is an area you cannot reach to mop up blood.

  15. Hello devs, First of all thanks for your hard work on this! All I wanted to say was, is it possible to make a choice of same sex gender? Like Yan-chan would be female and senpai will be female too?😡 I do hope ya’ll will implement this! Cheers ~ (Both yuri and Yandere starts with Y.)

  16. Right, so, I pledged 25$ on patreaon, which I figured I pay monthly now? Never used that thing before, but hey.
    I wish I could pledge more, and I could, probably, but I do like to have some of my meager, meager pay for myself.

    Being landser is suffering

    • Thank you for your generous contribution, Mumi-san! This will help me make some headway with the game!

      If you’d rather make a one-time donation than a monthly donation, feel free to reduce your donation to $0.00 after the first payout. You’ve got to get ahead in life, after all.

      Sometimes these Patreon donations make me feel worried, because I would never want to disappoint my backers. I guess I just have to try and keep a cool head about it.

      Now, if you’ll excuse me, I’ve got to head off to work on YanSim. I woke up early today so I could get a head start. Time to dive into it head-first! If the game is successful, one day I might be the head of a company!

  17. I’ve come across a few bugs. Some being a problem with keyboards.
    The first is that ‘R’ does absolutely nothing for me, the reset button being ` instead. Also, I do not know if it’s intentional, but at current it is not possible to jump in the game, even re-binding the keys did nothing to help this.
    On the other hand, there was a bug I encountered while playing the game itself that stopped ability to play the game entirely. While throwing a body in the incinerator, I accidently hit the sprint button and it froze the animation of Yandere-chan and the body she was holding lays at her feet (mind you, not in her grip like it should be) while the incinerator’s doors stayed open. I cannot pause the game, move, reset. I can open the phone menu, activate the Shingeki no Kyojin easter egg(?), but Yandere-chan’s outfit does not change like it usually does. The song from the MGS5 soundtrack can still play as well.
    Unfortunately, I didn’t record playing it before the bug, but I have a video for the aftermath. Here’s a link(this is faster for me to do than upload it to youtube ’cause my internet has horrible upload speed):

    • The “R” key is not meant to reset the level. The “R” key is used for picking up weapons. The ” ` ” key is the official reset button. There is no jump button; there is no jumping planned for this game.

      The running-while-throwing-body-into-incinerator bug was reported and fixed about a week ago. The build that will be uploaded on March 15th will have the bug fix.

    • I’m sorry, there is currently no way to restore those settings to default.

      In the next build of the game (being uploaded in less than 48 hours) you will be able to reset all of your settings by hitting the “Q” key at the Calendar screen.

  18. Dunno if anyone has mentioned this yet, but if you are crawling and have blood over your clothes, the crawling animation removes the bloody clothes.

  19. I tried to download it from Mega but it said the download failed with “Failed – No File” (I’m using Google Chrome) Do I have to download something else first or what is it?
    The game looks awesome by the way.

  20. The game is a pretty good and funny concept, though the test build is pretty unplayable for now, but I do hope to play the real version after it is done.

    There is a few things I noticed, when you kill someone on the second floor, it will show the blood on the first floor. When you spin the body around while holding, it get’s messed up and looks like luffy’s gatling gun (one piece).

    Just a suggestion is vsync, games like this is easy to play, and you do not want 120 fps(an example) for a 60 hz monitor, it’ll tear the screen and ruin gaming experience.

    Got a question, any way to receive a email when the real version is done?

  21. I enjoyed this very much. I would support this when a kickstarter goes up. A couple of things that would be great to see in the game would be being able to choose from a variety of senpais or being able to customize of your senpai (eg. girl/boy, geek/jock/etc. , whether or not senpai is womanizer, single/taken). Anyway, keep up the good work!

  22. It’s impossible to kill Yandere-chan’s enemy on the 1st day in the morning, but that’s probably on purpose.

    The incinerator stopped working:
    1. killed 2 random classmates
    2. changed the uniform
    3. since I am bad at murdering people, immediately killed 2 other classmates
    4. put 3 bodies plus weapon plus bloody uniform number 1 in incinerator
    5. wait 1 hour game time
    6. put the remaining body in the now-vacant incinerator
    7. incinerator cannot be turned on, you cannot put additional murder weapons in it, nothing. still visible in yandere vision, but there isn’t clock above it, you cannot interact with it and whatnot
    Also, what is the in-game time for Yandere-chan to go from batshitcrazy to normal? I was waiting two hours and it didn’t seem to drop by a single point.

    I look forward to wasting even more time with this.

    • Wow, those are some pretty elaborate steps. I followed those steps exactly, but I didn’t get a bug where the incinerator stopped working.

      If you find some steps that reliably reproduce the bug every time you follow that set of steps, please let me know!

  23. I think i found a problem :

    As I killed one npc on stairs and started to drag the body, it is stuck on the stairs, then stretchet out and started twitching. then as i draged long enough, it jumped to player char and calmed down.

    And i have one question which Keyboard button is the bust in/decrase function. because the
    left bottom at my keyboard dont works by me. (I have a QWERTZU Keyboard).

    • As I mentioned in the blog post above, I’m already aware of ragdolls clipping into geometry and twitching.

      The bust increase/decrease button is supposed to be the “greater than” and “less than” keys. These keys: “”

  24. Hello My name is Fear Mendalo. (not my real name, like to keep it hidden.) I have noticed your game on TheRPGMinx channel and i would like to do a lets play for your game to help build more support for your game. I am a big fan of anime and i am in an anime group called Anime 101 and if your would like i can also bring this up to my group to help build even more support since my group leader does videos on twitch. I hope to see more of your game soon.

  25. The Name’s Andrew, Why can’t i download the game? everytime i tried to download it, something happens. this game doesn’t have virus right?

    • “Something happens” is very vague. I can’t help you unless you describe exactly what goes wrong.

      I’m uploading a new build in less than two hours, so maybe the new download link will work out better for you.

  26. Hey, it’s me again..So just a question, Will you be added new animations for the weapons?

    If you do, a suggestion is this :

    Or example

    1 = stab, 2 = slash

    Just so for people trying to film something, they can get the proper animation.

  27. I love playing this game and the customization so far is not that bad. I’m sure once you start adding more things as the progress of the game continues, the customization will have more options as far as hair and stuff for your senpai and yourself. Though I have a question, for those of us who are artistically challenged, is will there be an easier way to change yandere-chan’s skin tone in the furture? Like her own customization at the beginning of the game before you do your senpai’s or something?

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