Buy 4th Supplementary PC Key

★ ★ ★ ★ ★

When does 4th Supplementary come out? The game has not reached any of the stores we track yet, so there is no price so far. Once the first offers appear we will start recording their history from release day, so later you will be able to see how the price moved from the start. Set an alert and we will write when the game goes on sale.

Release: November 2026
Youarenotalone
Youarenotalone
Official
Unavailable
Keyshops
Unavailable
Buy in Official Store:
Unavailable
Buy in Keyshops:
Unavailable

No entries, but don't worry, we will inform you once the new offer appears.

Create Alert Create deal Alert

About 4th Supplementary

4th Supplementary - about the game

4th Supplementary is an indie single-player horror game set on PC that places players in the role of a traditional shaman investigating an abandoned school filled with unsettling legends. The experience centers on survival within a supernatural time loop, where the goal is to escape by addressing the anomalies that sustain the cycle.

Gameplay

The core loop involves moving through dimly lit school hallways and rooms while avoiding aggressive spirits that patrol the area. Players must identify scattered cursed anomalies and perform sealing actions to weaken the loop's hold. Navigation requires careful attention to the environment, as the oppressive atmosphere limits visibility and heightens tension during each attempt to progress further.

Each iteration of the loop builds on prior knowledge, allowing players to adjust routes and timing based on what was learned in previous runs. The shaman's perspective adds a layer of ritualistic focus to the sealing process, turning exploration into a methodical search rather than random wandering. System requirements indicate it runs on modest hardware, emphasizing atmospheric audio and visuals over complex technical demands.

Game Modes

The game operates entirely as a single-player title with no multiplayer components. The structure revolves around repeated attempts to break the time loop through evasion and anomaly sealing, creating a self-contained campaign experience. Steam features confirm single-player support along with achievements and cloud saves to track progress across sessions.

There are no separate difficulty modes or alternate play styles listed, keeping the focus on the central horror narrative and survival mechanics within the school setting.

Atmosphere and Setting

The abandoned school serves as the sole environment, described with an oppressive and suffocating presence that reinforces the sense of being trapped. Eerie legends surrounding the location tie directly into the vengeful spirits and cursed anomalies that players encounter. The pitch-black corridors demand cautious movement, amplifying the dread of pursuit and the need for precise timing during each loop.

Visuals incorporate some AI-assisted elements for artwork, contributing to the eerie, rumor-filled aesthetic without relying on high-end graphical fidelity. The overall tone stays grounded in traditional shamanic elements mixed with supernatural horror, avoiding broader world-building in favor of the immediate school-based threat.

Is It Worth Playing?

As a new release with no user reviews available at launch, 4th Supplementary appeals specifically to players who enjoy atmospheric single-player horror centered on time loop mechanics and environmental exploration. Those drawn to tense evasion gameplay and iterative problem-solving in confined, dark spaces will find the core loop matches that preference closely.

The game supports family sharing and includes Steam achievements, making it accessible for solo sessions on Windows systems meeting the listed specifications. Its indie scale and focused design suit anyone seeking a concise horror experience without additional modes or ongoing seasonal content. Fans of similar loop-based survival titles may appreciate the shaman protagonist and anomaly-sealing objective as a fresh variation on the formula.

Interface:
AfrikaansAmharicArabicAssameseAzerbaijaniBelarusianBulgarianBanglaBosnianCatalanValencianCherokeeSoraniCzechWelshDanishGermanGreekEnglishSpanish - SpainSpanish - Latin AmericaEstonianBasquePersianFinnishFilipinoFrenchIrishGalicianGujaratiHausaHebrewHindiCroatianHungarianArmenianIndonesianIgboIcelandicItalianJapaneseGeorgianKazakhKhmerKannadaKoreanKonkaniKyrgyzLuxembourgishLithuanianLatvianMaoriMacedonianMalayalamMongolianMarathiMalayMalteseNepaliDutchNorwegianOdiaPunjabi (Gurmukhi)Punjabi (Shahmukhi)PolishDariPortuguese - PortugalPortuguese - BrazilQuechuaK'iche'RomanianRussianKinyarwandaScotsSindhiSinhalaSlovakSlovenianAlbanianSerbianSothoSwedishSwahiliTamilTeluguTajikThaiTigrinyaTurkmenTswanaTurkishTatarUyghurUkrainianUrduUzbekVietnameseWolofXhosaYorubaSimplified ChineseTraditional ChineseZulu
Subtitles:
AfrikaansAmharicArabicAssameseAzerbaijaniBelarusianBulgarianBanglaBosnianCatalanValencianCherokeeSoraniCzechWelshDanishGermanGreekEnglishSpanish - SpainSpanish - Latin AmericaEstonianBasquePersianFinnishFilipinoFrenchIrishGalicianGujaratiHausaHebrewHindiCroatianHungarianArmenianIndonesianIgboIcelandicItalianJapaneseGeorgianKazakhKhmerKannadaKoreanKonkaniKyrgyzLuxembourgishLithuanianLatvianMaoriMacedonianMalayalamMongolianMarathiMalayMalteseNepaliDutchNorwegianOdiaPunjabi (Gurmukhi)Punjabi (Shahmukhi)PolishDariPortuguese - PortugalPortuguese - BrazilQuechuaK'iche'RomanianRussianKinyarwandaScotsSindhiSinhalaSlovakSlovenianAlbanianSerbianSothoSwedishSwahiliTamilTeluguTajikThaiTigrinyaTurkmenTswanaTurkishTatarUyghurUkrainianUrduUzbekVietnameseWolofXhosaYorubaSimplified ChineseTraditional ChineseZulu

Age rating

Unavailable
Historical low
Price history from official stores
-
-
-
Price history from keyshops
-
-
-

FAQ

8 questions

Before you start looking for a cheap 4th Supplementary PC key, check the essentials. Developed by Youarenotalone. Published by Youarenotalone. PC released date: November 2026. Genres: Indie. Categories: Family Sharing, Single-player, Steam Achievements, Full controller support, Playable without Timed Input, Save Anytime, Stereo Sound, #category_contrast_controls.

Q

Where to buy a cheap 4th Supplementary Steam key or CD key?

There are currently no active offers for 4th Supplementary. Set a price alert on XD.deals and we will notify you the moment a deal becomes available.

We don't have a current Steam Store price for 4th Supplementary. The game may be temporarily unavailable or not yet listed on Steam.

Our price tracker covers both official retailers and key marketplaces, so you can find 4th Supplementary on sale even outside seasonal promotions. We currently detect 0 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, 4th Supplementary is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. 4th Supplementary has an official page on the Steam Store, but we currently don't track any third-party offers with Steam DRM. Check back later or set a price alert.

Not at this time. Valve marks 4th Supplementary as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

According to our data 4th Supplementary is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best 4th Supplementary deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Want to buy at the best moment? Set a price alert on XD.deals and get notified when 4th Supplementary hits its next historical low.

Create Alert
Join our Discord
Get instant help from our community and stay updated on the latest deals
Set Price Alerts
Get notified by email when game prices drop to your target
Create Free Account
Unlock wishlists, price alerts, and Steam sync