A stranger hides among your friends.
It wears a friend's face, a friend's name — and speaks in your friend's own recorded voice.

🚧 This is an ALPHA

FakeFriend is early. It works, it is played, and it will still have bugs — including ones that show up mid-game: an impostor that gets stuck, a voice clip that does not play, a Purge Night that behaves oddly. Nothing here can corrupt your world, but do not put this on a server you are not willing to restart.

Please report what breaks. A bug you tell me about gets fixed; one you quietly uninstall over does not.

At a glance

⚠ Read this first: this mod records voices

FakeFriend records short clips of what players say in Simple Voice Chat, so the impostor can speak in a real player's voice. Nothing else would work — a synthesised voice is not your friend's voice, and the whole mod is built on that difference.

Before you install, know this:

• Nothing is recorded without consent. Every player who joins is shown a screen explaining it and must press Confirm. Decline and you are not recorded — and on a dedicated server you are not let in, because a player the impostor cannot copy breaks the game for everyone else.
• Recordings never leave the machine. They live on the server (or in your own world folder in singleplayer) and are never uploaded anywhere.
• The server owner controls all of it. A screen in the mod settings lists every player whose voice has been collected, how much there is, and how long it is kept — 14 / 30 / 90 days or forever. Any player's voice can be erased completely: audio and transcripts together.
• Only genuine microphone recordings are ever played. There is no speech synthesis in this mod. Every clip is checked for authenticity at five separate points before it reaches the air.
• Erasing is real. Erase someone's voice and the impostor starts from nothing — it will not wear that face again until it has enough to speak with.

If strangers play on your server, tell them. It is their voice.

It arrives wearing a friend's face

The mimic copies a player who is online right now — their username above its head, their armour, the item in their hand. Health-bar mods read it as friendly and green.

When it turns up

The server checks once every 15 minutes. All of this has to be true at the same moment:

• at least two players online — the mod will not copy the only person there;
• the Overworld — there are no mimics in the Nether or the End;
• you are alone — no other player within 70 blocks;
• there is a face free to wear — another player, not you, not already taken;
• that player has spoken enough into voice chat that there is something to say back.

Then it rolls a 45% chance. At most two mimics exist on the whole server at once, and one victim never gets two.

It behaves like a player, not like a mob

It walks at a player's walking speed — 4.317 blocks per second, exactly. No sneak-crawl, no sprint bursts. It only speeds up behind your back.

Every few seconds it picks up a chore: fells a tree, mines, sets a block down, walks over to grab something that dropped, puts down a crafting table and fiddles with it. Each encounter rolls it a temperament and four to six quirks out of eight — turning away sharply, bored hopping, freezing, backing off two steps.

It does not meet your eyes.

It speaks in the copied player's voice

Punch it while it is calm and it flinches, drops what it was doing, turns round and yelps — in that player's voice, out of a real recording. Nothing it says is synthesised. Every sound is a clip of a real person, chosen.

You can talk to it

It hears what is said near it and picks the recording that actually answers, instead of one at random. Say "you're a mimic" out loud and it denies it — twice, in your friend's voice.

The third time it agrees.

And then it turns.

When it turns

An iron axe appears in its hand. Its health snaps back to full in front of you. It screams, using the loudest real recording it has of the person it is pretending to be. Its body starts to shake, and it comes after you in silence.

• a wooden door breaks in one second;
• an iron door it opens instead of breaking;
• if it cannot reach you, it chops through the wall at real breaking speed — sixteen blocks per encounter, ten seconds between each;
• if you climbed out of reach, it builds a pillar up to you and goes for you the moment it arrives.

An angry mimic cannot be killed. Except on one night.

One lie is sent to you alone

On the Player Locator Bar the real player's dot is moved onto the mimic, so the bar tells you your friend is standing right there. Nobody else's bar changes.

How it goes away

There is no timer and it does not die of old age. The encounter simply ends — the mimic is gone, with a sound — when:

• another player comes within 30 blocks. A calm mimic always leaves; an angry one leaves half the time and takes the newcomer the other half;
• the player it is copying walks within 70 blocks of you. Two of the same person in one place is the one thing it will not allow;
• you get more than 60 blocks away and nobody else is near it;
• you die, it swims for two minutes, or it has been stuck in one spot for a minute.

That is deliberate. Nobody should ever be able to say "come and look, there's a second Sasha standing over here."

The Purge Night

Somewhere between the 10th and the 15th day of the world, and then every 10–15 days after, the moon comes up wrong. The date comes from the world seed — leaving and rejoining will not reroll it — and the night needs at least two players online.

• Chat says "The moon isn't right tonight." Time jumps to sunset and a second, blood-red moon rises next to the first. Render distance drops to four chunks and the fog closes in. All other music goes quiet and the mod's own theme plays.
• Chat is off for the whole night. Voice is the only way to talk.
• You cannot sleep. Lie down and something is standing at the head of the bed.
• Every living player gets two pale copies of themselves, hunting somebody else. They come out in a ring, stand still for five seconds with empty hands, then arm themselves.
• Dying shows no death screen — it says "YOUR IDENTITY WAS STOLEN." You respawn where you fell, behind a grey veil only you can see, and two new copies of your face walk out to hunt.
• This is the one night a mimic can be killed.

If you pay close attention, you’ll notice a warning. A month before this happens, a lone figure appears at the edge of the rendering area, simply standing still. If you approach it, it turns around and walks away. As night falls, those who don’t leave begin to appear.

They watch you, mimicking your movements for a while. Don’t let them stare at you for too long, for they are learning, bringing the Purge Night closer…

Then, one day before the fateful night, they all leave—this is announced in the chat.

The AI is optional

The impostor can hold a conversation: it hears you, picks the recording that answers, and plays it. That needs a small language model, and it is entirely optional — without it the mod still works, the impostor just speaks at random.

If you turn it on, the mod downloads once, onto your own machine:

Between 1.4 and 2.2 GB, depending on which quality you pick. It all runs on your machine, in a separate process, and nothing is sent anywhere. The engine shuts itself down after a few minutes idle and starts again when needed.

On macOS the speech side stays external: run your own recogniser and point the mod at it.

Requirements

• Minecraft 26.2, Fabric Loader 0.19.3+, Fabric API 0.160.0+, Java 25
• Simple Voice Chat — not bundled, install it yourself. Without it the mod loads and runs, but the impostor is mute, which is most of the point.

Client and server both need the jar.

What this mod does not do

• It does not add a voice chat — it uses Simple Voice Chat.
• It does not synthesise speech. Ever.
• It does not send your voice anywhere.
• It does not touch your world generation, your recipes or your performance budget when nothing is happening.

Support the mod

FakeFriend is made by one person. If it scared you, that is the best thanks — and if you want to go further:

Credits and licence

FakeFriend is all rights reserved. The full list of third-party components it downloads — with versions, sources and licences — ships inside the jar as THIRD-PARTY.md.

All sounds and images in the mod were made by the author. No Mojang assets are bundled.