PCGame

Castle Constructor

Hex-grid tower defense with modular castles and shifting enemy paths

Sisyphean Games · Released Mar 27, 2024

Strategy

Reviews
Very Positive
81% of 75
Recent reviews
Not enough recent
Players
0
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
4 months ago
Jun 12, 2026
Minimum PC
Recent integrated
4 GB RAM · 0.2 GB disk
Full requirements

What is Castle Constructor?

This single-player tower defense game has you build modular castles on 3D hex maps to protect your kingdom's keep from soldiers and siege weapons. Campaign levels give you resources for upgrades and new building options. You can also survive waves in endless mode or build freely and design enemy waves in creative mode.

For you if...

  • +you like building and upgrading defenses across campaign levels
  • +you want to design enemy waves to test your castles

Not for you if...

  • −you prefer fixed enemy routes through tower defense maps
  • −you dislike defending against repeated waves of enemies

What players say

81% of 75 reviews are positive

Players praise the simple tower-defense concept, but some say the campaign becomes repetitive and needs more variety.

Screenshots and trailer

Castle Constructor screenshot 1

Castle Constructor system requirements

Minimum: Recent integrated, 4 GB RAM, 0.2 GB of disk space.

As published by the developer.

Can my PC run Castle Constructor?

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Minimum

OS
Windows 10
Processor
2.5 Ghz 2 core processor or better
Graphics
Recent integrated graphics card or better
Memory
4 GB RAM
Storage
200 MB available space
DirectX
Version 11

Recommended

OS
Windows 10
Processor
3.0 Ghz 4 core processor or better
Graphics
Dedicated Graphics Card
Memory
4 MB RAM
Storage
200 MB available space
DirectX
Version 11

Does Castle Constructor have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Castle Constructor run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • Some in-game text is small and may be hard to read
  • All functionality is accessible with the default controller configuration
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
9
Steam features
Family Sharing
Languages
Text only: English.

Does Castle Constructor use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

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