GameAction

CTHON

64KS
Released Mar 17, 2017by Gravity GamesMostly Positive(74% of 96 Steam reviews)

Embark - if you dare - upon a desperate battle against the unknown horrors of the beyond; featuring roguelike elements, including procedural generation and permanent death, CTHON seamlessly blends visceral combat with strategic character building.

Offers

What are keyshops?

Official stores

Official stores with direct support.

Steam
SteamOfficial
updated

About CTHON

Evil Has Awakened


It is the 24th century, and mankind has only recently begun expanding its reach to the star systems nearest our own Solar System.

A dark and terrible secret is buried within a misshapen moon nestled in the massive asteroid belt of the Epsilon Eridani system. Pythos colony was built there ostensibly to exploit the planetoid's mineral resources, but now they've disturbed a kind of evil that lurks beyond the fringes of our comprehension.

Through an ever-changing labyrinth, you will remold yourself into a cybernetic killing machine using the powerful technologies of a long-dead alien civilization. With these new-found weapons, you will pave a path of aberrant corpses toward the greatest threat to mankind ever encountered.

CTHON is an old school science-fiction first-person shooter, where you become a cybernetic weapon against the dark legions of a powerful evil entity - known only as Cthon - who lurks within the planetoid. It is a classic space horror game, inspired by the likes of Doom, System Shock, and Quake.

Features


  • 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 delve 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.

Game details

CTHON price history

Lowest tracked price: £4.29 (Jul 7, 2026) · current best: £4.29.

CTHON player count & reviews

74% positive reviews all-time · 1 peak players in the last 30 days.

CTHON — frequently asked questions

Where can I buy CTHON at the cheapest price?

Right now the cheapest offer for CTHON is £4.29 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.

What is the lowest price CTHON has ever been?

The lowest price KingsPrice has tracked for CTHON is £4.29 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.

How many people play CTHON?

CTHON peaked at 1 concurrent players on Steam in the last 30 days (highest on Jul 21, 2026). The player chart on this page updates daily.

How can I get CTHON at a discount?

Create a free price alert on this page and KingsPrice will email you when CTHON drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.

System requirements

Minimum

Minimum:
  • OS *: Windows XP / Vista / 7
  • Processor: 2.5 GHz processor
  • Memory: 2 GB RAM
  • Graphics: 256 MB
  • DirectX: Version 9.0c
  • Storage: 500 MB available space

Recommended

Recommended:
  • OS *: Windows 7 / 10
  • Processor: 2.7 GHz or faster processor
  • Memory: 3 GB RAM
  • Graphics: 1 GB
  • DirectX: Version 9.0c
  • Storage: 1 GB available space

Similar at tracked lows

Games like CTHON (8)