Cassiculus
First-person cave horror focused on exploration rather than combat
Craig Lawrence · Published by LockleyGames · Released Jun 25, 2024
- Reviews
- Mostly Positive
- 77% of 205
- Recent reviews
- Not enough recent
- Players
- 0
- daily peak, Oct 28, 2026
- Steam Deck
- Playable
- Last update on Steam
- 2 years ago
- Jun 27, 2024
What is Cassiculus?
Cassiculus is a free, single-player horror walking simulator set in Oberon Cave, where you search for your brother and his friends. Using a headtorch, you explore cave passages, discover items and secrets, and encounter story cutscenes.
For you if...
- +you prefer short horror stories driven by atmosphere
Not for you if...
- −you avoid spiders and confined underground spaces
What players say
77% of 205 reviews are positive
Players praise the visuals, sound design, and voice acting, but criticize the limited interaction. A recent reviewer reports being unable to use the sledgehammer at an early blockade, preventing further progress.
Screenshots and trailer
Cassiculus system requirements
Minimum: GTX 960, 8 GB RAM, 5 GB of disk space.
As published by the developer.
Can my PC run Cassiculus?
Tell us your graphics card once and every game page will answer this for you.
Set up my PC →Minimum
- OS
- WINDOWS® 10 (64-BIT Required)
- Processor
- Intel® Core™ i5-4460, 2.70GHz or AMD FX™-6300 or better
- Graphics
- NVIDIA® GeForce® GTX 960 or AMD Radeon™ RX 460
- Memory
- 8 GB RAM
- Storage
- 5 GB available space
Recommended
- OS
- WINDOWS® 10 (64-BIT Required)
- Processor
- AMD Ryzen 5 2600X
- Graphics
- NVIDIA GeForce RTX 3060
- Memory
- 8 GB RAM
- Storage
- 5 GB available space
Does Cassiculus have co-op or multiplayer?
No: single-player only, no multiplayer modes declared.
Does Cassiculus run on Steam Deck?
Playable Playable: it runs on Steam Deck with some adjustments.
- Default controller config not fully functional
- Sometimes shows mouse, keyboard or non-Deck controller icons
- Some in-game text is small and may be hard to read
- The native resolution is not the default one
- Default graphics settings perform well on Steam Deck
PC version details
- DRM
- None declared on Steam
- Controller
- Keyboard and mouse
- Platforms
- Windows
- Steam features
- Family Sharing
- Languages
- Full audio: English.
Does Cassiculus 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 27, 2026. How to filter AI games on Steam
