Castellan

Real-time roguelite castle defense against thirteen approaching armies

Bozalt Games · Released Nov 2, 2026

Reviews: No score yet
Recent reviews: Not enough recent
Players: 1; daily peak
Steam Deck: Untested
Last update on Steam: 17 hours ago; Nov 3, 2026
Minimum PC: HD 620; 4 GB RAM · 0.5 GB disk; Full requirements

What is Castellan?

Castellan is a medieval dark fantasy castle-defense game where you hold humanity's last border fortress. During each attempt, you aim arrows, deploy soldiers from cards, reposition units, and cast limited-use spells. Before each run, gold buys chests containing soldiers and spells; even failed attempts earn mastery for permanent upgrades.

For you if...

+you like managing several battlefield tasks at once
+you enjoy combining melee fighters, ranged units, and healers

Not for you if...

−you prefer turn-based combat with time to deliberate

Screenshots and trailer

Castellan system requirements

Minimum: HD 620, 4 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run Castellan?

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Minimum

OS: Windows 10 64-bit
Processor: Dual core 2.0 GHz
Graphics: Vulkan 1.0 compatible GPU (Intel HD 620 / GeForce GTX 650 or better)
Memory: 4096 MB RAM
Storage: 500 MB available space

Does Castellan have co-op or multiplayer?

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

Single-player

Does Castellan run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 37
Steam features: Cloud saves, Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Simplified Chinese, Portuguese - Brazil, Japanese, Korean, Spanish - Latin America, Polish, Portuguese - Portugal, Russian, Turkish, Ukrainian.

Does Castellan use AI-generated content?

Yes. The developers disclose AI-generated content on the game's Steam page:

AI tools were used during development to assist in the creation of some pre-generated content included in the game. All such content was reviewed, curated, and edited by the developer before inclusion. Some 2D sprites, icons, and key art were created with the assistance of generative AI tools. Music and sound effects were also created with the assistance of AI audio tools. Localization for languages other than English was produced with AI assistance and reviewed by the developer. The game does not use generative AI at runtime and does not generate any live AI content during gameplay.

The statement mentions: ArtMusic & soundText & translationsStore page & marketing

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 Nov 3, 2026. How to filter AI games on Steam