CTHON Update (1.15) Patch Notes, DLC List & Safe Upgrade Guide

CTHON (1.15) Update Summary: The latest 1.15 release of CTHON bundles all cumulative hotfixes, shader & frame-pacing improvements, controller compatibility patches, and unlocked DLC packages in a single verified download.

→ Download CTHON (1.15) Full Updated Release

What's Included in CTHON (1.15)

Quick Game Overview & Verification Verified 100% Working

CTHON Update Patch Notes, DLC List & Safe Upgrade Guide is a PC game for Windows. This tested release features v1.15 with an estimated download size of 287.14 MB. Pre-installed, DRM-free, verified clean, and ready to play offline with full gamepad support.

Platform
Windows
Build / Version
v1.15
Download Size
287.14 MB
File Integrity
SHA-256 Passed
  • Cumulative Patch Rollup: Includes all official stability patches, bug fixes, and balance updates released through build 1.15.
  • Performance & Frame Pacing: Improved shader caching, reduced VRAM memory leaks, and smoother frame delivery on both desktop GPUs and handheld devices.
  • Safe Save Migration: Upgrading from an older build of CTHON retains your existing profile and local save progress automatically.
  • Related Pages: Full Game Download | How to Install | System Requirements | Troubleshooting Fixes

About CTHON

Step into a chilling sci-fi adventure where humanity's quest for expansion unearths sinister forces lurking in the depths of space. Set in the 24th century, this game immerses you in the eerie Pythos colony, a site built to mine resources from a misshapen moon in the Epsilon Eridani belt. As you navigate through a dynamic and shifting labyrinth, you must adapt and transform into a powerful cybernetic being to confront the malevolence that threatens your very existence. The ever-changing environment keeps the gameplay fresh, while the deep lore and haunting atmosphere draw you in further. Ideal for players who enjoy a blend of exploration, survival, and a gripping narrative, this title is sure to entice fans of cosmic horror and immersive storytelling.

CTHON Free Download

Key Features & Highlights

  • Full Pre-Installed Release: Ready to play immediately upon extraction—no third-party setup or installer required.
  • All Latest Updates & Patches: Fully updated to the latest build with performance optimizations, bug fixes, and bonus content.
  • Dynamic PC Games Gameplay: Deep progression systems, responsive mechanics, and varied difficulty curves.
  • High-Fidelity Audio & Visuals: Polished textures, smooth framerates, and rich sound design optimized for modern PC hardware.
  • Verified Clean & Safe: 100% verified files free from bloatware, spyware, or intrusive background processes.

Instructions

  • Click the Download button below and you will be redirected to UploadHaven.
  • Wait 5 seconds and click on the blue ‘download now’ button. We recommend using a download manager for faster download speeds. (You can use FDM which is free here, or any other download manager).
  • Once the game is finished downloading, right click the .zip file and click on “Extract to CTHON v1.15.zip” (To do this you will need 7-Zip, which you can get here, or you can use the built in windows extractor).
  • Double click inside the CTHON v1.15 folder and run the setup application. Accept the EULA, and install the game. Then, launch the game through the desktop shortcut.

CTHON Free Download (v1.15)


CTHON (v1.15)
Size: 287.14 MB

 

Reminder: This download is completely free and won't cost you a penny. However, If you love the game and want to purchase it, you can support the developers by doing so here.

System Requirements

  • Fight – and die – through nine sprawling randomly generated levels. No two games are ever the same, and permanent death ensures unrelenting tension.
  • Modify yourself with the cybernetic technologies of the ancients. A unique upgrade-powering system allows you to get down to the details of character building, and choose the stats you want, when you want, with millions of permutations. Mod types include defensive upgrades that can increase your physical strengths and offensive upgrades to maximize your firepower and grant new ways to exterminate your adversaries.
  • Slay an extensive array of monstrous creatures, each with intriguing tactical strengths and weaknesses. Battle corrupted humanoids, alien abominations, and biomechanical constructs as you explore ever deeper.
  • Use nano-tech currency to gain a strategic edge – access machines that can forge new items, replenish your resources, and expand your cybernetic framework.
  • Secret areas abound in the labyrinth; scour the levels for them and reap the rewards – and dangers – they may hold.
  • Choose one of three characters, each of them specialized toward different cybernetic builds.
  • Multiple difficulty levels allow you to adjust the nightmare world to your tastes.
  • A complex, haunting soundtrack complements the dark and oppressive atmosphere.

Screenshots

CTHON PC Screenshot

CTHON Gameplay Screenshot

Frequently Asked Questions & Setup Guide

Q: What is included in the CTHON (1.15) update?
Build 1.15 of CTHON includes stability improvements, frame-pacing optimizations, shader compilation fixes, and all released DLC and expansion content.

Q: Will updating CTHON to 1.15 erase my existing save files?
No, your existing progress is preserved when upgrading to 1.15 because save data is stored separately from the main game binaries.

Q: Where can I download the full CTHON (1.15) build?
You can download the verified full build of CTHON (1.15) directly from the main release page on GOG Unlocked.