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Cataclismo - The Old Kingdom cover art

DLC / add-on · Hooded Horse

Cataclismo - The Old Kingdom

SteamEurope and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.

Reclaim a lost realm in a new strategic mode – conquer and defend multiple citadels, marshal supply lines to fuel your advance, and hold back escalating waves of horrors as the final reckoning stirs. Rebuild the Old Kingdom, turn by turn.

Before you buy

Redeem on
Steam clientPC: Windows. Needs a free Steam account.
Activates in
Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.Activates on accounts registered in the EU, EEA, Switzerland and the United Kingdom.Will not activate on accounts registered in North America, Asia, Latin America or Oceania.
You get
A digital activation keyAn add-on. You need the base game on the same account.
Delivery
To your account and by emailDelivered to your account and by email once it is ready. Some orders get a short manual check first.

Trailers and screenshots

01 / 09 Trailer

Cataclismo - The Old Kingdom

Trailer 1 of 1

About this add-on

Venture north to reclaim a lost continent in a new strategic game mode where you conquer and defend multiple citadels, expanding your realm and building its economy and military might turn by turn. In Cataclismo - The Old Kingdom, the coming of the night is no longer the only fateful hour you'll race against – with every passing day, the horrors grow stronger and bring you closer to the next deadly wave crashing against your citadels. Dispatch your troops to provide reinforcements where they're most urgently needed, send out convoys to transport vital resources between your citadels, and raise your walls across multiple fortresses to hold back the onslaught.

Cataclismo - The Old Kingdom introduces a new game mode that includes:

  • A grander campaign - Plan your conquest and manage your realm at the War Table — spend Might to recruit new troops, explore special tiles with unique boons, trade resources for fresh reinforcements, and spend knowledge points to unlock new technologies, abilities, units, and buildings.

  • Strategic supply lines - Marshal resources between your citadels to hold your gains and press your advance, developing each conquered settlement over time to add to the prosperity of your realm. Plan your routes carefully as convoys and units travel only a few tiles per turn.

  • Escalating threats - Each citadel you take becomes another front to defend, with its own countdown to the next deadly wave, forcing you to race troops and resources between them as the assaults mount. Hold the line long enough to conquer them all, but beware: the final reckoning has yet to wake.

Wrest the Old Kingdom from the grip of the Mist and rebuild a world where humanity can finally thrive.

Description, images and details are taken from this product's Steam page.

Details

Developer
Digital Sun
Publisher
Hooded Horse
Base game
Cataclismo
Released
20 Aug, 2026
Genres
Strategy, Simulation, Horror, Survival
Runs on
Windows
Activates on
Steam client, Europe and UK
Interface
English, French, German, Spanish - Spain, Japanese, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, Korean, Polish, Hungarian, Italian, Czech, Turkish, Ukrainian
Full audio
English
  • Single-player
  • Downloadable Content
  • Steam Achievements
  • Steam Trading Cards
  • Steam Workshop
  • Camera Comfort
  • Color Alternatives
  • Custom Volume Controls
  • Adjustable Difficulty
  • Mouse Only Option
  • Save Anytime
  • Stereo Sound
  • Subtitle Options
  • Steam Cloud
  • Family Sharing

System requirements

Windows

  • Requires a 64-bit processor and operating system
Cataclismo - The Old Kingdom system requirements on Windows
ComponentMinimumRecommended

Activating it on Steam client

  1. Open the Steam client and sign in.
  2. Choose Games in the top menu, then Activate a Product on Steam.
  3. Paste the key and confirm. It appears in your library.
  4. You need the base game on the same account.

The key is listed for the Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom. region. Read how regions work before you buy.

Cataclismo - The Old Kingdom€10.69