We Love It's Guide to…
Build a physics-driven aquatic creature from cells, then explore hostile biomes and fight through a roguelike run.
Released 02 Jul 2025
Build Cell Creatures
Wire Living Circuits
Design Cell Weapons
Primordialis is a physics-based roguelike fish builder. Unleash your creativity to defeat creatures using venomous tentacles, electrical shocks, or exploding children. The possibilities are endless. Explore the primordial depths to reveal its secrets and discover what lies beyond.
Developed by Kyler Natividad, Keith Sammut · Published by Kyler Natividad
In Primordialis, you build and control an aquatic creature assembled from cells, each with its own properties. The physics-based construction system lets you shape how your creature moves and functions.
Explore the primordial depths, collect cells, and fight creatures in a hostile ecosystem. Enemies are built from cells too, and their different forms and abilities affect how encounters play out.
In the roguelike mode, find new cells and mutations as you progress through five main biomes and face their challenges. Death ends the run; sandbox mode lets you experiment with creature designs outside a run.
Players who enjoy Primordialis often praise the freedom to design unusual creatures and discover unexpected effects by combining cells. Reviews also highlight the physics-driven interactions, enemy designs, and the satisfaction of learning through experimentation. Its steep learning curve, difficult runs, and loss of progress on death are recurring drawbacks; some players find the early progression repetitive or the mechanics insufficiently explained.
Primordialis is a physics-based roguelike fish builder. Unleash your creativity to defeat creatures using venomous tentacles, electrical shocks, or exploding children. The possibilities are endless. Explore the primordial depths to reveal its secrets and discover what lies beyond.
================================= Create ==================================
The core of Primordialis is its simple yet deep creature creation system. Your body is constructed out of cells which each have unique properties and functions. With over 60 cell types to place and combine, there are countless creative combinations you can use to engineer your perfect fish.
You are given the freedom to play how you want, whether you want to be a massive serpent that swallows other creatures whole or to tinker with complex mechanisms and circuitry. Your only limit is your imagination.
================================= Survive =================================
In the main rogue-like mode, you embark on a difficult journey of growth and evolution. Explore the world and learn to deal with a diverse ecosystem of hand-crafted enemies, all built using the same creature creation system as you. Discover cell types, mutations and more to help you survive in this harsh and brutal world. Traverse the 5 main biomes and discover what lies at the end.
You can also play in sandbox mode if you want to perfect your creature design plans before a run, study the biology of your enemies, or just enjoy some relaxed creature building.
| Platforms | Windows |
|---|---|
| Achievements | 5 |
| Age ratings |
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| Controller required | No |
| Demo | View demo on Steam |
