Flugsvamp 4.0 Market Link — Swedish Onion Mirrors
Flugsvamp 4.0 is a Swedish darknet market with a red mushroom logo and menus in Swedish. Flugsvamp 3 shut for good on the last day of October 2021. About a week later a different crew had a new site up under that name, and they said they were not the old one. A Flugsvamp link is the Tor hostname for this newer site, with prices in kronor.
Updated
Flugsvamp Market After FS3 Closed
Flugsvamp 3 did not vanish in one night. The team first called a maintenance window, let vendors pull their balances, froze new sales, and took the site down. On the last day of October 2021 they said the close was permanent.
The next site was already being built, and it was not supposed to inherit the job. A note on the old forum, late that October, thanked the previous operators and then drew a line: no connection to earlier versions of Flugsvamp. The writers called themselves an IT and security team. They said the market had been in development for a while, and that the hole left by FS3 pushed them to hurry. The date they named was 4 November 2021.
Two serious groups were in that week, plus one email that was an obvious fake. One group put a rough beta up and kept the name Flugsvamp 4.0. The other wrote that they would drop the name and call their platform something else. That race is why the first public version looked half-finished. Pages were slow. The layout was broken. You could register and look around before the payment side worked. On 7 November the payment side was up. By the end of November the first parcels were arriving. In December 2021 a Swedish account of the catalog counted 34 amphetamine listings and 3 for heroin, called the cannabis range wide, and called the ketamine range thin. Those numbers are from that month.
At launch a password with more than one symbol was rejected. The choice between a buyer account and a vendor account was a small circle, and phones missed it. Both of those are launch bugs from November 2021, not a description of every screen since.
Red Fly Agaric Logo
Flugsvamp is the Swedish name for the fly agaric, the red mushroom with pale spots. The logo is two of them, a large one and a small one, on black, with Flugsvamp 4.0 in grey to the right. Clearnet pages about picking that mushroom rank for the same word. If the screen has no red caps, it is not this market.
Swedish Catalog, Prices in Kronor
The left rail is headed Kategorier. Under Cannabis the labels run Gräs, Hybrid, Indica, Sativa, Hasch, Vape, Vax, and Övrigt. Under Centralstimulanter: Amfetamin, Ecstasy, Kokain, MDMA, Övrigt. Läkemedel starts with ADHD and Bensodiazepiner. In the screenshot, Kokain is the row that is selected.
Each card is a photo, a Swedish title, stars out of five, a price that starts with Från and a number of SEK, the word Säljare and a name, and a button that says VISA. The prices on that screen sit between a few hundred kronor and just over a thousand. The card is how you recognize the market. It is not a ranking of sellers.
Flugsvamp Login — Konto and 0.0002 BTC
The account screen is an empty one, which is useful, because the labels are all visible. Top right is Konto, then Logga ut. Under the mushroom the menu reads Hem, Marknad, Beställningar, Dispyter, Meddelande, Support. There is no forum tab. The balance box says Tillgängligt and 0 BTC. Insättning says there is no active deposit address. The yellow button reads Ny adress. Uttag refuses a withdrawal under 0.0002 BTC. On this account the left column is blank: no measurements, no reviews, no transactions. That is one unused account, not a market without a history.
The green arrows on that picture point at Konto and at Ny adress. Someone drew them on the screenshot. They are not part of the market's chrome.
The 2021 notes said you could skip uploading your own PGP key, and skip a PIN, and the account would still exist. At the address step, the careful habit was to encrypt the address yourself with the seller's key. The form also had a box that applied the seller's key for you. The manual version of that is in the PGP verification guide. How a balance sits until release is in the escrow guide. Bitcoin, which is the coin on this Konto page, is covered in the cryptocurrency guide.
Flugsvamp Link — Onion Hostnames and Mirrors
A Flugsvamp link, a URL, and a mirror are the same hostname: the one that loads this Swedish login. Five of them are printed below. They are the set that has sat with the long Swedish writeup of the launch. Every one starts with fs4is. Read the rest of the string. A hostname that only borrows those five letters is a different site. These lines are not a signature from the market.
Select a line to highlight it.
fs4is3y4sh5uhxgjj4yudjgpjaxwkkdqt64ztolrbvlw5pxesezsfvad.onionfs4is64kdohkd3twjcr2jf57r64yrfsjihgezfcbhjhproz6cjxc24qd.onionfs4is7zrzcubrrfkhrx4miywpx3l5xk4vse2axsxbgetdlabe6gvvqyd.onionfs4isc7eewwxk3jao3fdygbqpx6ytuhsghsszgcnuluoxfgoo2b4ynad.onionfs4isdhjirjlsxnlezruuobnkoi6atggsxqan6yeenoz7qtcwlnzslid.onionBitcoin Deposits and the 120-Dollar Letters
The launch is the old half of the story. The newer half is Bitcoin that leaves a wallet and never shows up under Tillgängligt. In August 2026, and again in October 2026, people wrote that a deposit was already visible on the blockchain and still missing from Konto, with support quiet. I would not send a second payment while the first one is missing from that box.
In November 2025 the same public thread turned into something nastier. People reported letters that claimed a list of past purchases and asked for about 120 dollars, with a threat to write the neighbors and contact the police. One person saw the same letter, and the same payment address, sent to someone else. A shared address is what a copied threat looks like. Paying it does not repair a leak. Writers on that thread also said staff waved the letters off.
There is no Flugsvamp forum to compare those notes on. The menu in the screenshot stops at Support and Meddelande. If every hostname above times out, the market status page is the next place to look, ahead of a hostname pasted in a comment. The client is Tor Browser from the Tor Project. First-time setup is in the Tor Browser guide.
Swedes who want a different Swedish-language market have been pointing each other at Catharsis. That is a separate market, with its own page on this site.