Osta Entity: The Black Day PC

A third-person survival horror action game set in dark, atmospheric underground environments, blending psychological suspense with intense combat.

The story follows Adam, a former special forces operative assigned a top-secret mission: investigate a supposedly abandoned underground bio-research facility and extract evidence proving the government’s involvement in funding a viral development program—one that spiraled out of control and killed thousands.

What begins as a simple data retrieval job quickly turns into a dangerous search for answers. Most of the facility’s personnel are dead—casualties of brutal emergency protocols. Two scientists are missing, and Adam must track them through dark, hazardous corridors and storm-drain tunnels.

As Adam follows their trail, unsettling signs and unexplained events make him question the true nature of his mission—and his own connection to the facility.

Estimated Total Playtime: approximately 6 hours for a standard playthrough ( 4 hours for the main game and 2 hours for The Operative DLC ).

Gameplay:

• Combat: Attack enemies directly with firearms, melee strikes, and evasive maneuvers in fast-paced encounters.

• Executions: Crush and smash weakened enemies with brutal takedowns for maximum impact.

• Weapons: Unlock new weapons as you progress.

• Health: Restore your strength using limited medical injections found along the way.

• Boss Battles: Confront powerful bosses, each with distinct attack patterns and strategies.

Resources & Crafting:

Ammunition can become low at times, You can explore your surroundings to gather some extra ammo and materials that allow you to craft additional rounds and health injections whenever supplies begin to run out.

Key Features:

• Algorithm-Driven AI Protagonist & True Companion:

  Adam is equipped with a flexible, algorithm-driven interaction system, making him feel and act like a real companion throughout your journey. He reacts to situations, shares his thoughts, engages you directly as the player, and sometimes even breaks the fourth wall. Every conversation, reaction, and response adds depth to the adventure—and you can customize how much Adam interacts with you. Note: This is not a generative AI system.

• Original Story & Atmosphere:
  Unravel a unique, unpredictable narrative filled with psychological horror and mystery.

• Stunning Visuals:
  Explore atmospheric environments with high-quality graphics and immersive effects.

• Diverse & Challenging Levels:
  Encounter new hazards, puzzles, and enemies in every area for a consistently fresh experience.

• Blending Real and Virtual Worlds:
  The game creatively mixes real-world interaction with the virtual environment, requiring you to think beyond the screen to solve certain puzzles and challenges. Some enigmas can only be solved by combining clues from both realities, offering a truly unique gameplay twist.

• Not an Imitation:
  Enjoy innovative ideas and mechanics—ENTITY: THE BLACK DAY is not another clone.

The Operative DLC:

The DLC is included with the game at no additional cost. It directly continues the story after the main ending and puts you in the role of Ethan Carter, offering a new first-person gameplay experience focused on narrative and exploration. Discover more about “The Black Day Project”, a secret government project conducted within a research facility in the highly classified Area 1107, uncovering more about its background, purpose, and the events surrounding it as the story continues from a new perspective.

Supported Languages 🌍:
English, العربية, Русский, 中文（简体）, 日本語, Deutsch, Español (España), 한국어, Português (Brasil), Polski, Français, Italiano, Español (Latinoamérica), 中文（繁體）, Nederlands, Bahasa Melayu, Čeština, Dansk, Suomi, Magyar, Norsk, Português (Portugal), Română, Svenska, Türkçe