Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.
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Release Date:
Jul 22, 2024

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Early Access Game

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Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We love considering and implementing ideas from players, and we will use Early Access to both expand and improve the game. Early Access provides a great way of involving players in the development process, and we are looking forward to working with the community to make a better game together.”

Approximately how long will this game be in Early Access?

“We might remain in Early Access for around a year, but that might change depending on how the design develops with player feedback.”

How is the full version planned to differ from the Early Access version?

“The full version of the game is planned to have additional content influenced by community feedback during Early Access, however, the structure and major mechanics of the game are already present now. We also plan to conduct additional polishing, balancing, and bug fixing during the Early Access period.”

What is the current state of the Early Access version?

“The Early Access version is fully playable and has all the content and features described on the store page.”

Will the game be priced differently during and after Early Access?

“We might increase the price during the Early Access period as additional content and features are added.”

How are you planning on involving the Community in your development process?

“We love involving the community in development and are active on our Discord and the Steam forums. We want to hear all suggestions, bug reports, and player feedback in order to make a better game together.”
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Planned Release Date: Jul 22, 2024

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“A wonderfully clever new RTS and a unique take on the genre.”
PC Gamer

“This strategy gem feels like a fun one to keep an eye on.”

“Its brick-by-brick building makes Cataclismo stand out from the pack.”
Rock Paper Shotgun


About This Game

Lead the last survivors in the aftermath of the Cataclismo as a corrupted world seeks to destroy all that remains of humanity. Build fortresses brick by brick, designing intricate, towering structures of wood and stone to fend off waves of Horrors as they attempt to overwhelm your band of survivors. Command powerful units in their stalwart defense, coordinating their varied capabilities as you race from breach to breach. Lead forays into the unknown to secure the vital resources needed to grow your military might and construction capabilities as you hold fast against the ever-growing onslaught – siege after siege, night after night.

Far from the relative safety of the Last City, your citadels and outposts hold back the hordes of Horrors before they can strike at the heart of humanity. Build impregnable fortresses across multiple biomes using an intricate building system that allows you to design your defenses with full freedom and strategic creativity, adapting your plans to the surrounding environment. Take advantage of natural chokepoints, height advantages, and local resources as you strategize for the challenge of each upcoming night’s attack.

  • A highly modular building system allows you to design your fortresses exactly as you desire – one piece at a time, with blueprints you have designed in advance, or using community creations shared by other players. Use your hard-earned resources to build structures that grant access to previously unreachable parts of the map, or construct fortifications that deny the Horrors access and provide your troops safe vantage points.
  • Build cheaply and quickly using wood, or establish quarries and use durable stone to better withstand the onslaught. Keep an eye on structural integrity and load-bearing columns as falling pieces will kill friend and foe alike, often creating unique opportunities to crush numerous enemies with cleverly placed vulnerabilities.
  • Adapt your fortress to growing needs as you acquire new tools and expand in an attempt to secure all the resources needed to sustain a powerful defensive force. Optimize the path from resource deposits to your warehouses with well placed structures and use rooftop construction to make the most of your limited space.

Though the Horrors may test your defenses during the day, only at night do they pour forth in full force. Spend your days exploring the world and pursuing the growth of your fortress, but as the sun starts to set, you would be wise to position your forces in preparation for the night’s onslaught.

  • Skillfully command soldiers ranging from sharp-eyed bowmen to explosive cannoneers to respond to an ever-evolving situation as new Horrors emerge. Draw the enemy into chokepoints lined with devastating traps and ambush them raining down fire arrows and pots of poison flung from your battlements. Maneuver your troops into precise tactical positions to take advantage of special traits and abilities made available as they upgrade, positioning them at heights that let them perform at their best – a wise architect can design fortresses that allow for a tiered defense.
  • Build vital structures to sustain your defenses against the growing threat and unlock higher levels of prosperity alongside new technologies. Resource gathering outposts, unit recruitment centers, and housing for your citizens all directly and indirectly support your troops in their efforts. Should the walls falter, even your citizens' homes can be used as a secondary layer of defense – you must protect the citadel at all costs.

Cataclismo contains all three of: an epic single-player narrative campaign; a skirmish mode featuring hand-crafted maps; and an endlessly replayable challenge mode that puts you to the test on procedurally generated maps where you fend off increasingly dangerous waves of Horrors. A complex map editor gives you the ability to design and share skirmish maps of your own to challenge the community while the intricate construction system will allow the architecturally inclined to build and share blueprints and help others in their defense against the Horrors.

The Cataclismo left the world devastated. But all hope is not lost – lead humanity through the darkness to a bright future as you design grand fortresses and command troops in real-time battles against a seemingly endless horde that will stop at nothing to see your people destroyed.

System Requirements

    • OS: Windows® 10 (64-bit)
    • Processor: Intel® Core™ i7-4770 (quad-core) / AMD® FX-Series™ FX-9590 (quad-core)
    • Memory: 8 GB RAM
    • Graphics: NVIDIA® GeForce® GTX 760 (2 GB) / AMD® Radeon™ R9 270X (2 GB)
    • DirectX: Version 11
    • Storage: 10 GB available space
    • OS: Windows® 10 (64-bit)
    • Processor: Intel® Core™ i7-6700 (quad-core) / AMD® Ryzen™ 5 1500X (quad-core)
    • Memory: 12 GB RAM
    • Graphics: NVIDIA® GeForce® GTX 1050 Ti (4 GB) / AMD® Radeon™ RX 570 (4 GB)
    • DirectX: Version 12
    • Storage: 10 GB available space

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