IMHO.

Games like Primordialis

If Primordialis is your kind of game, the closest matches are Sipho, Biovoid and Flounder — picked from the ranked list below. Reviewers single out its death teaches through iteration, deep cell combination systems and atmospheric. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

Get personalized picks →

About Primordialis: 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.

2025ActionIndieSimulationEarly Access19.99 USDDeck PlayableWindowsby Kyler Natividad, Keith Sammut
Primordialis — Steam game cover
Players highlight
Complete control over creature biology including brain functions and cell systemsDeath teaches through iterationDeep cell combination systemsAtmosphericChallengingContemplative

Players who liked Primordialis also play

Steam players who put hours into Primordialis also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Sipho

    WHY THIS

    Shares roguelike progression and an atmospheric mood with Primordialis.

    Top pick for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Primordialis.

    Sipho is an action survival game with an intricate building system. Grow your own creature and take over the local ecosystem. Fight, grow, survive, dominate. Play in adventure or sandbox mode.

    2023ActionStrategyIndie17.99 USDDeck VerifiedSteam ↗
  2. Biovoid

    WHY THIS

    Second-strongest match for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Primordialis.

    Biovoid is a creature-building roguelike game where you slay hordes of hostile aliens. Combine a variety of cells and mutations to create game-breaking builds and evolve from a fragile hatchling to a deadly predator.

    2026StrategyIndieSimulationSteam ↗
  3. Flounder

    WHY THIS

    Third-strongest match for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Action and Simulation with Primordialis.

    The Ocean Ecosystem Roguelite. Grow a colorful school of fish with unique abilities and unlock powerful items to help them repel boss invasions. Collect rare fish to complete your peaceful Virtual Tank. Hold the line and surface victorious! The depth is deceiving.

    ActionStrategySimulationSteam ↗
  4. Everything is Crab: The Animal Evolution Roguelite

    WHY THIS

    Shares difficulty scaling and permadeath with Primordialis.

    Ranked #4 for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Primordialis.

    The Animal Evolution Roguelite. Hunt, Flee, Scavenge and Thrive in a living ecosystem. Choose from 125+ Evolutions and Specialisations for unique creature combinations in every run. Adapt to survive the natural curve in order to beat carcinisation... or get Darwin'd trying!

    2026ActionStrategyIndie9.99 USDDeck VerifiedSteam ↗
  5. Be

    WHY THIS

    Ranked #5 for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Primordialis.

    Build, relax or explore in a beautiful world. Chill out next to a lake or build crazy structures (with friends!) Choose your own weather & time of day.

    2022IndieSimulationCasual12.99 USDSteam ↗
  6. VOID/BREAKER

    WHY THIS

    Shares indie and a challenging mood with Primordialis.

    Ranked #6 for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Primordialis.

    Fast paced Bullet hell Roguelite FPS 🔴 Fight relentless machines driven by a hostile AI. Escape an endless cycle. Craft infinite weapon variants with deep gun modding. Forge deadly synergies. Carve your way out through enviro destruction /BREAK THE SYSTEM /BREAK FREE

    2025ActionSportsIndie19.99 USDDeck VerifiedSteam ↗
  7. Orbit Run

    WHY THIS

    Ranked #7 for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Primordialis.

    Orbit Run is an arcade sci-fi game with roguelike elements, in which orbiting asteroids are your only weapons. Catch asteroids and combine them to unlock their run-altering abilities. Skillfully manoeuvre to dodge attacks and land massive asteroid strikes to defeat the ever-increasing waves of foes.

    2027ActionIndieSteam ↗
  8. FISHERY

    WHY THIS

    Shares a whimsical mood with Primordialis.

    Ranked #8 for Primordialis fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Primordialis.

    Fishery is a stylized aquarium simulation game. Harness your creativity to build and maintain beautiful aquatic habitats. Then relax and watch your beautiful fish enjoy their home.

    2019StrategyIndieSimulation19.99 USDSteam ↗

Reviewers mention these as similar to Primordialis

Surfaced from review text: when other players write 'if you liked X, try Y', we catch the name and resolve it back to a Steam game.

  1. Noita

    WHY THIS

    Shares physics simulation, procedural generation and an immersive mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Action and Indie with Primordialis.

    Noita is a magical action roguelite set in a world where every pixel is physically simulated. Fight, explore, melt, burn, freeze and evaporate your way through the procedurally generated world using spells you've created yourself.

    2020ActionIndieAdventure7.99 USDDeck VerifiedSteam ↗
  2. SPORE™

    WHY THIS

    Shares a whimsical mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Action and Simulation with Primordialis.

    Be the architect of your own universe with Spore, an exciting single-player adventure. From Single Cell to Galactic God, evolve your creature in a universe of your own creations.

    2008ActionStrategyAdventure4.99 USDSteam ↗
  3. Kerbal Space Program

    WHY THIS

    Shares physics simulation and an immersive mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Indie and Simulation with Primordialis.

    In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.

    2015IndieSimulation9.99 USDDeck PlayableSteam ↗
  4. Sipho

    WHY THIS

    Shares roguelike progression and an atmospheric mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Action and Indie with Primordialis.

    Sipho is an action survival game with an intricate building system. Grow your own creature and take over the local ecosystem. Fight, grow, survive, dominate. Play in adventure or sandbox mode.

    2023ActionStrategyIndie17.99 USDDeck VerifiedSteam ↗
  5. Thrive

    WHY THIS

    Shares an atmospheric mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Indie and Simulation with Primordialis.

    An evolution simulation game. Take control of your species in the environment and edit your species as a whole. Compete with other evolving species for resources on an alien planet.

    2021IndieSimulationCasual4.99 USDDeck PlayableSteam ↗
  6. Croak Crusader: Spawn of the Spore Spectre

    WHY THIS

    Shares a whimsical mood with Primordialis.

    Reviewers of Primordialis cross-mention this title as a similar play. Shares Action and Indie with Primordialis.

    Embark on an odyssey into the unknown! Behold the tale of Toadman, an enigmatic being born from alien tech and the mysteries of Radiant Verde. Witness his perilous quest through treacherous jungles to confront Captain Croak in an epic showdown! Welcome to "Spawn of the Spore Spectre"!

    2025ActionIndieAdventureFreeSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Primordialis at current Steam store prices.

  1. Terraria

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action and Indie with Primordialis.

    Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!

    2011ActionIndieAdventure9.99 USDDeck VerifiedSteam ↗
  2. Garry's Mod

    WHY THIS

    Priced ~75% under Primordialis on Steam right now. Shares Indie and Simulation with Primordialis.

    Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

    2006IndieSimulationCasual4.99 USDDeck PlayableSteam ↗
  3. Lethal Company

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action and Indie with Primordialis.

    A co-op horror about scavenging at abandoned moons to sell scrap to the Company.

    2023ActionIndieAdventure9.99 USDDeck PlayableSteam ↗
  4. Left 4 Dead 2

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action with Primordialis.

    Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

    2009Action9.99 USDDeck VerifiedSteam ↗
  5. People Playground

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action and Indie with Primordialis.

    Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.

    2019ActionIndieSimulation9.99 USDDeck PlayableSteam ↗
  6. Portal 2

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action with Primordialis.

    The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!

    2011ActionAdventure9.99 USDDeck VerifiedSteam ↗
  7. Fallout: New Vegas

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Action with Primordialis.

    Welcome to Vegas. New Vegas. Enjoy your stay!

    2010ActionRPG9.99 USDDeck PlayableSteam ↗
  8. Undertale

    WHY THIS

    Priced ~50% under Primordialis on Steam right now. Shares Indie with Primordialis.

    UNDERTALE! The RPG game where you don't have to destroy anyone.

    2015IndieRPG9.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  2. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  3. Steam Engine Simulator

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Simulation with Primordialis.

    The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.

    2023SimulationFreeDeck VerifiedSteam ↗
  4. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.

    2016ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  5. Disfigure

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Disfigure is a grim-dark action rogue-like where you battle relentless hordes of monsters lurking in the shadows. Unlock powerful weapons, craft god-like builds with hundreds of upgrades, slay colossal bosses, and push your limits in intense 20–30 minute survival runs!

    2023ActionIndieFreeDeck PlayableSteam ↗
  6. The Lab

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!

    2016Free To PlayFreeSteam ↗
  7. Landfall Archives

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!

    2023ActionStrategyIndieFreeSteam ↗
  8. SuchArt: Creative Space

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Primordialis.

    Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!

    2021ActionIndieAdventureFreeDeck PlayableSteam ↗

Plays great on Steam Deck

Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.

  1. Sipho

    WHY THIS

    Shares roguelike progression and an atmospheric mood with Primordialis.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Primordialis.

    Sipho is an action survival game with an intricate building system. Grow your own creature and take over the local ecosystem. Fight, grow, survive, dominate. Play in adventure or sandbox mode.

    2023ActionStrategyIndie17.99 USDDeck VerifiedSteam ↗
  2. Everything is Crab: The Animal Evolution Roguelite

    WHY THIS

    Shares difficulty scaling and permadeath with Primordialis.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Primordialis.

    The Animal Evolution Roguelite. Hunt, Flee, Scavenge and Thrive in a living ecosystem. Choose from 125+ Evolutions and Specialisations for unique creature combinations in every run. Adapt to survive the natural curve in order to beat carcinisation... or get Darwin'd trying!

    2026ActionStrategyIndie9.99 USDDeck VerifiedSteam ↗
  3. VOID/BREAKER

    WHY THIS

    Shares indie and a challenging mood with Primordialis.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Primordialis.

    Fast paced Bullet hell Roguelite FPS 🔴 Fight relentless machines driven by a hostile AI. Escape an endless cycle. Craft infinite weapon variants with deep gun modding. Forge deadly synergies. Carve your way out through enviro destruction /BREAK THE SYSTEM /BREAK FREE

    2025ActionSportsIndie19.99 USDDeck VerifiedSteam ↗

Frequently asked about Primordialis

Does Primordialis run on Steam Deck?
Primordialis is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does Primordialis cost?
Primordialis is listed on Steam at 19.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Primordialis?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Primordialis are Sipho, Biovoid, Flounder.
Who developed Primordialis?
Primordialis was developed by Kyler Natividad, Keith Sammut and published by Kyler Natividad.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Primordialis.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

33 Games Like Primordialis — Ranked for 2026 · imho.run