Link Steam
indiegame.fan
Opus Building header art

Opus Building

In this sequel to Opus Castle, investigate the mystery behind the Joelma Building fire in a supernatural journey through time, uncovering the secrets of a demonic cult and spiritual horrors rooted in real historical events.

Steam Page
Developer
Messier Data e Creative
Publisher
Messier Data e Creative
Release
March 9, 2026
146 days ago
Steam Reviews
Awaiting reviews

Does this feel indie?

Vote based on whether this game feels indie to you. You can change your vote at any time. Results earn an IGF score after 10 accepted votes.
No votes yet
Vote on More Games
Game contextLatest: IGF Team
ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan.Status
Notes
Latest Contributor: IGF TeamEdit notes
Search Google: Who developed Opus Building?Developer scaleThe operating scale of the game's developer.
Search Google: Who published Opus Building?Publisher scaleThe operating scale of the game's publisher.
Search Google: Is Opus Building self-published or published by Messier Data e Creative?Publisher statusHow the game's publishing relationship is classified.
Search Google: How is Opus Building and Messier Data e Creative funded?FundingThe known source of funding behind the game.
Search Google: Who controls the creative direction and IP for Opus Building and Messier Data e Creative?Creative controlWho appears to retain creative control of the game.
Search Google: What is the release status of Opus Building?Release statusWhether and how the game has been released.

Media

6 items

About the Game

Hell didn’t end — it was merely asleep.

In Opus Building, the sequel to Opus Castle, you return to the shadows of São Paulo for a deeper, more dangerous, and more supernatural investigation. Blending psychological horror, narrative exploration, and esoteric elements based on real events, this chapter places you at the center of a new mystery involving secret cults, demonic rituals, and one of Brazil’s most infamous tragedies: the fire at the Joelma Building.

A new story unfolds with investigative journalist Helena Meirelles, hired to write a feature about the building’s revitalization. What she doesn’t know is that she’s being used by a cult seeking the second key to the Ark of Solomon — a hidden artifact of immense power tied to the 1974 fire.

As Helena digs deeper into her story, she’s pulled into a temporal journey that takes her into the past, reliving the hours before the tragedy — and into a space where hidden forces are about to tear the Veil between worlds.

Key Features:

  • A setting inspired by the Joelma Building
    A dense and symbolic reconstruction of one of Brazil’s most iconic locations, shifting between the physical, the spiritual, and the infernal.

  • Narrative exploration across layered timelines
    Travel between 1974, the present, and a distorted spiritual dimension where time folds in on itself — investigate, decode, and survive.

  • Psychological and spiritual horror
    Demonic entities, whispers, illusions, and ever-changing environments create an atmosphere of dread built on tension and discovery.

Inspired by real events. Powered by the unknown.

Opus Building expands the universe introduced in the first game, taking historical horror to new spiritual depths. Get ready to face your own fears — and uncover what was truly sealed behind the doors of the 13th floor.

Indie Game Fan