Written by Messier Data e Creative
Table of Contents:
1. Screenshots
2. Installing on Windows Pc
3. Installing on Linux
4. System Requirements
5. Game features
6. Reviews
This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.
1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."
Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.
Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.
2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.
3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.
4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.
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.
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.
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.
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