Primordialis
Physics-based roguelike where you build a fish from specialized cells
Kyler Natividad, Keith Sammut · Published by Kyler Natividad · Released Jul 2, 2025 · Early Access
- Reviews
- Very Positive
- 93% of 1,027
- Recent reviews
- Very Positive
- 100% of 30 in 30 days
- Players
- 28
- daily peak, Oct 28, 2026
- Steam Deck
- Playable
- Last update on Steam
- 4 months ago
- Jun 15, 2026
What is Primordialis?
This single-player roguelike follows survival runs through five primordial underwater biomes. You combine more than sixty cell types, fight other creatures with abilities such as venomous tentacles and electrical shocks, and discover new cells and mutations. A separate sandbox mode lets you test designs and study enemies.
For you if...
- +you enjoy learning complex systems through trial and error
Not for you if...
- −you prefer forgiving progression over difficult survival runs
What players say
93% of 1,027 reviews are positive · 100% of 30 in the last 30 days
Players praise the creature editor’s flexibility and room for experimentation. Earlier reviews criticize sudden, confusing deaths and question the amount of content for the price.
Screenshots and trailer
Primordialis system requirements
Minimum: 512 MB VRAM, 2 GB RAM, 0.1 GB of disk space.
As published by the developer.
Can my PC run Primordialis?
Tell us your graphics card once and every game page will answer this for you.
Set up my PC →Minimum
- OS
- 64 bit Windows 7, 8/8.1, 10, 11
- Processor
- Quad Core CPU
- Graphics
- 512 MB VRAM, OpenGL 4.0 support
- Memory
- 2 GB RAM
- Storage
- 100 MB available space
Recommended
Requires a 64-bit processor and operating system
Does Primordialis have co-op or multiplayer?
No: single-player only, no multiplayer modes declared.
Does Primordialis run on Steam Deck?
Playable Playable: it runs on Steam Deck with some adjustments.
- Sometimes shows mouse, keyboard or non-Deck controller icons
- Some text entry requires manually opening the on-screen keyboard
- 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
- 5
- Steam features
- Workshop, Cloud saves, Family Sharing
- Languages
- Text only: English.
Does Primordialis 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
Tags
- Early Access
- Simulation
- Physics
- Action Roguelike
- Nature
- Exploration
- Roguelike
- Sandbox
- Roguelite
- Sci-fi
- Difficult
- Underwater
- Indie
- Building
- 2D
- Survival
Recent updates
- Jun 15, 2026 · Primordialis v0.2 beta update
- Dec 24, 2025 · Primordialis v0.1
- Jul 27, 2025 · Primordialis beta branch
- Jul 5, 2025 · Primordialis v0.0g
- Jul 4, 2025 · Primordialis v0.0f
