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Hold the Keep
A dark medieval tower defense. Build walls, arrow towers, bombards, and a castle against 13 escalating enemy types across 8 maps. Adaptive music and economy reshape every run. 4 difficulty modes, 24 Steam achievements, cloud saves, first-class controller support.

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Features
Single-player
Steam Achievements
Steam Cloud
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are 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 feel the community, once they get their hands on this game, will better be able to guide us on balance and what features are important to them. At this point, this is a full and fun strategy game and with more feedback we can make it even better.”

Approximately how long will this game be in Early Access?

“6-12 months or until the noted features are ready.”

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

“We plan to ensure the game is well balanced and to add 2 player local coop support.”

What is the current state of the Early Access version?

“Fully playable game on windows and linux/SteamOS. Mouse and Keyboard with some controllers supported.”

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

“We plan to raise the price marginally as we ship new content and features.”

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

“We will get feedback from players specifically on how they feel about the balance of the game and crucial quality of life features that the game is lacking.”
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This game is not yet available on Steam

Planned Release Date: Jun 2, 2026

This game plans to unlock in approximately 3 weeks

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About This Game

A 3D real-time tower defense survival game inspired by Age of Empires II's "Art of Defence" custom campaign. Build a medieval stronghold from a single resource - gold - and defend it through minutes of escalating siege.

Features

  • 9 buildings - Arrow Towers, Bombards, Castles, Walls, Markets, Town Centers, Outposts, and the University tech tree

  • 13 enemy types - from Swarmers to Battering Rams that smash through stone

  • 7 unique maps - moats, forests, river crossings, canyons, marshlands

  • Multiple difficulty modes - With tuned starting gold and enemy scaling to match your playstyle and experience

  • 7 research trees, 21 upgrades - meaningful synergies that reshape your strategy

  • 27 Steam achievements - including challenge runs (no walls, arrow-only, no research, perfect defense)

  • Mouse and keyboard support, partial controller support

Strategy depth

Place Outposts to buff nearby towers. Stack Reinforced Walls research with Fortified Foundations for 4.5x wall HP. Farm enemies with Bounty research. Or rush a Castle and hope for the best. Every match is a series of compounding economic and defensive choices.

Win condition

Survive the full timer. Lose all your Town Centers and Castles, and the realm falls.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generative AI was used during development to assist with some in-game visual art (e.g. building and enemy concept iteration, color palette suggestions), code, and Steam marketing materials (store capsules, achievement icons). Final assets were reviewed and integrated by the developer. All music, sound design, and game design are hand-authored.

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 2 GB RAM
    • Graphics: OpenGL 3.3 / Vulkan 1.0 compatible, 2 GB VRAM
    • DirectX: Version 11
    • Storage: 200 MB available space
    • Sound Card: Any
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10/11 64-bit
    • Processor: Quad-core 3.0 GHz
    • Memory: 4 GB RAM
    • Graphics: Vulkan 1.0+, 2 GB VRAM
    • DirectX: Version 11
    • Storage: 200 MB available space
    Minimum:
    • Processor: Dual-core 2.0 GHz
    • Memory: 2 GB RAM
    • Graphics: OpenGL 3.3 / Vulkan 1.0 compatible, 2 GB VRAM
    • Storage: 200 MB available space
    Recommended:
    • Processor: Quad-core 3.0 GHz
    • Memory: 4 GB RAM
    • Graphics: Vulkan 1.0+, 2 GB VRAM
    • Storage: 200 MB available space
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