As a war brews over the secession of the Tenebrous Highlands from the Kingdom of Gnarmania, you must infiltrate the dungeons of Tenebrous Keep to stop a rebel lord from tearing the kingdom apart.
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Feb 28, 2019
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Available: February 28

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February 6

Tenebrous Dungeon - Release Date February 28, 2019


We are happy to announce that Tenebrous Dungeon is on track for its release on February 28th!

We want to thank all of our supporters for helping Tenebrous Dungeon get onto Steam. We will continue polishing up our Steam features to ensure the best quality possible on launch day.

If you like old-school first person shooters from the early 1990's, please add Tenebrous Dungeon to your wishlist to stay updated on news in the coming weeks.

-Apathus Software
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About This Game

Tenebrous Dungeon is a single-player retro FPS, where you must infiltrate the dungeons of Tenebrous Keep to stop a rebel lord from tearing the kingdom apart.


  • XBOX 360 & XBOX ONE Controller Support (Includes Rumble)
  • Over 20 areas - spanning various dungeon, outdoor and castle environments.
  • Fight over 12 different enemy types and bosses with unique fighting styles.
  • Discover secret areas hidden throughout each level to find treasure and weapons.
  • Use ranged, melee and arcane weapons to survive the onslaught of enemies in your way.
  • Choose from 3 difficulty settings to fit your skill level or play style.
  • Arcade-style gameplay reminiscent of shooters from the early 1990's.


  • You must find weapons and edible items throughout Tenebrous Keep to survive.
  • Defeat enemies and salvage weapons to increase your score and level up.
  • Use skill-points you earn when you level up to improve your abilities.
  • Consume stimulants like leafs, mushrooms, and potions to gain temporary boosts.


  • Listen to prisoners, examine items and read notes to unravel the dark and mysterious story behind a rebel lord and an unnatural ally.
  • Learn about the long and tragic history of Tenebrous Keep and the Tenebrous Highlands.
  • Fight your way through different factions and bosses to stop the rebel lord, and prevent a full-scale war from enveloping the kingdom.

Mature Content Description

The developers describe the content like this:

Tenebrous Dungeon contains mild violence, crude humor, and light profanity.

System Requirements

    Minimum:
    • OS: Windows® 7 (Service Pack 1)
    • Processor: Dual-core CPU @ 2.4 GHz
    • Memory: 2 GB RAM
    • Graphics: Integrated graphics or graphics card with 512 MB of dedicated VRAM
    • DirectX: Version 9.0c
    • Storage: 100 MB available space
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