
Solve 3 increasingly intricate murders by examining the evidence -- find the motive, the means, and the opportunity. Use testimonies of the suspects as evidence by examining every detail for contradictions... and signs of sin. Purify the possessed. Purge the daemons.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.13/day in the week to Aug 3 → 0.71/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Everyone is a suspect. Unmask their lies. Choose one to purge.
Lucifer Within Us asks you to solve player-directed, story rich mysteries with your wits, making observations and deductions in a world of daemonic possession and invasive soul-scanning technology.
From the creator of The Shrouded Isle.

Question your suspects. Watch their movements and testimonies closely, as the reconstruction may be based on lies. Use contradictions and clues to form your own hypothesis. Who is lying and why? Who is possessed? You must decide what is the truth for yourself, based on the evidence presented.
No hidden plot twists, no QTEs, no random puzzles or mini-games, just you and the information. In all 3 cases, don’t just act like a detective -- BE a detective. Finding the murderer will require true understanding of the case, not just following the story.

Enter the minds of citizens to gain insight into what they don’t want you to know. Dig through their subconscious and accuse the guilty in order to cast out their daemons, for the good of the Inquisition. Any damage done to a citizen’s psyche as a result of quarantine, exorcism, or rehabilitation is a consequence of their own immorality.
Through centuries of indoctrination, humanity is taught to think pure thoughts and speak true words, untainted by falsehoods and delusions. Yet beneath this facade of purity, you find dark desires stir deep within people’s hearts, yearning for release.

As a digital exorcist working for the Church of Ain Soph’s Inquisition, it is your duty to find sinners and ensure continued harmony. Digital daemons corrupt the network cause human hosts to act on secret desires and sins, even unto murder. Discover the One Truth to determine which citizens are infected and exorcise the possessed.

Built on the rubble of the Old World, the last human city has become a utopia of progress, digitization, and art. The Church guides citizens towards advancement and Truth with the aid of a digital consciousness network.
Use all of the tools at your disposal to find the truth, wherever it may hide… and beware the lies you tell yourself.
Engagement
Reviews
Themes across 55 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
거부할 수 없는 마력의 인공지능 루시퍼 (매일 업데이트되지는 않으며, 작성자가 원할 때마다 업데이트됩니다.) [1일차] 살인 사건의 범인을 찾아야 합니다. 사건 현장의 증거들을 수집하고 용의자들과 대화를 나누면서 그들을 심문하여 범인을 찾아내야 하죠. 증거들은 현장 여기저기에 존재하며 일부는 증거라기 보다는 정보용 오브젝트로 존재합니다. 용의자들은 현장의 특정 위치에 있으며 그들과의 대화를 통해서 사건 발생 전후의 알리바이를 확인할 수 있죠. 그들과의 대화를 진행하면서 사건 상황을 유추하고 증거를 제시하면서 다양한 정보를 수집할 수 있습니다. 이 과정에서 용의자들의 증언 사이에 발생하는 모순점을 발견하고 제시하여 보다 정확한 정보를 파악할 수 있죠. 어느정도 정보가 모이게 되면 용의자들의 내면 속에 숨겨진 성향 등을 파악할 수 있습니다. 해당 정보들을 통해서 그들에게 영향을 미친 악마들의 정체를 추측해나갈 수 있죠. 정보들이 모이고 범인이 특정된다면 대상을 선택한 뒤 혐의를 입증하기 위한 단계를 진행합니다. 범행 수단과 시각, 동기를 제시하여 범인을 압박하며, 만약 제시한 내용이 올바르지 않다면 상대측에서 반박을 해오죠. 모든 내용이 올바르다면 최종 심문을 통하여 대상 내부에 깃든 악마의 진명을 불러 그를 에테르로 추방하게 됩니다. 하나의 사건을 완료하면 그에 이어지는 새로운 사건들이 발생하며, 총 3개의 사건을 진행하게 됩니다. 사건에 따라서 2개의 범행 수단, 시간을 제시해야 하기도 하죠. [아쉬운 점] -빠르게 걷거나 달리기가 기본이면 좋을듯 -대화를 말풍선 영역에서 클릭해야만 넘길 수 있음 -마지막 엔딩이 뭔가 얼레벌레 느낌
游戏还行,但这也太短了,才3个案子,不是打骨折的话没必要入。
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French*, German, Japanese, Portuguese - Portugal, Simplified Chinese, Korean*languages with full audio support
Hours played at review time, across 55 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
A very short game, would recommend buying on sale. Otherwise it has interesting mechanics, a unique art style and some interesting workbuilding/writing. Would recommend.
o jogo é legal, eu achei mt curto para oq dava pra ser. ele tem um problema mt serio, os misterios sao MUITO obvios e a mecanica de buscar contradições nos testemunhos é MUITO dificil/especifico. Entao muitas vezes vc sabe exatamente oq aconteceu mas fica 1/2 horas tentando provar, oq é mt frustrante.
Excellent ! Renouvelle le système d'enquête avec une analyse des témoignages et des confrontations. Bien différent du classique "recherche de preuves matérielles". Des graphismes très beaux, autant dans le jeu que lors des cinématiques. Vraiment super !
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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