Castle Constructor
Hex-grid tower defense with modular castles and shifting enemy paths
Sisyphean Games · Released Mar 27, 2024
- Reviews
- Very Positive
- 81% of 75
- Recent reviews
- Not enough recent
- Playing now
- 0
- peak 24h 1
- Steam Deck
- Playable
- Last update
- 3 months ago
- Jun 12, 2026
Free demo available, 0 playing it now: get the demo.
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 system requirements
As published by the developer.
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
PC version details
DRM, required accounts, controller support and Steam features.
- DRM
- None declared on Steam
- Controller
- Keyboard and mouse
- Platforms
- Windows
- Achievements
- 9
- Steam features
- Family Sharing
Steam Deck: Playable
- 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
Tags
- Tower Defense
- Medieval
- Strategy
- PvE
- Hex Grid
- 3D
- Building
- Deckbuilding
- Minimalist
- Singleplayer
- Early Access
- Casual
Recent updates
- Jun 12, 2026 · 1.2.6 Patch
- Jan 2, 2026 · 1.2.5 Patch
- Oct 19, 2025 · 1.2.4 Patch
- May 12, 2025 · 1.2.3 Patch
- Apr 17, 2025 · 1.2.2 Patch
