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Games like Primordialis

Kyler Natividad, Keith Sammut · 2025 · Windows

Steam: 92 % positive of 1,012 reviews, as of Oct 28

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.

24 games that play like Primordialis and 24 that look like it. Closest by gameplay: Sipho, Subnautica and Everything is Crab: The Animal Evolution Roguelite.

Player tags

  • Simulation
  • Physics
  • Action Roguelike
  • Nature
  • Exploration
  • Rogue-like
  • Sandbox
  • Rogue-lite
Open on Steam ↗

Steam reviews

What players say

Mostly positive: players love the open creature building and roguelike challenge, but early access bugs, harsh early game and a few unfair enemies frustrate many.

Many players enjoy building creatures from a large catalogue of cells and discovering unexpected combinations, such as lasers, homing missiles, acid sprayers and even absurd constructions. Players compare it to Spore's cell stage and Noita, and they like that the rules are learned through experimentation rather than tutorials. The roguelike loop, where each death restarts a run, is described as punishing but rewarding once a working build is found. Some players complain about the difficult early game, unclear cell tooltips, bugs such as objects flying off into the void, controller and key binding problems, and the second area, where certain enemies, especially a jellyfish, are considered too strong. Some reviewers would like co-op and more enemy variety. Recent reviews are similarly divided, with praise for creativity and complaints about balance and performance.

Praised

  • Creative creature building

    Players enjoy combining a large variety of cells into almost any creature they can imagine, from fish to machines.

    Many players
  • Learning through experimentation

    Reviewers like that cell interactions are discovered by trying things out and watching enemies, rather than through tutorials.

    Many players
  • Roguelike challenge

    Players describe the punishing runs and the satisfaction of finally beating a boss with a working build as a major draw.

    Many players
  • Comparisons to Spore and Noita

    Reviewers describe it as a mix of Spore's cell stage and Noita's knowledge-based progression and spell crafting.

    Many players

Criticised

  • Harsh early game

    Players find the first biome repetitive and frustrating, with weak starting cells and early deaths.

    Many players
  • Unclear cell descriptions

    Players say tooltips are too vague or incomplete, so they must work out hidden mechanics by trial and error.

    Some players
  • Bugs and performance

    Reviewers mention glitches such as objects launched into the void, crashes with large creatures, and performance problems.

    Some players
  • Unfair enemies in second area

    Players say the jellyfish and laser enemies in the second area are far stronger than the bosses and feel unbalanced.

    Some players
Who it suits
Players who enjoy tinkering with mechanics, sandbox creativity and hard roguelikes that reward experimentation.
Who should skip it
Players who want something relaxed or casual, or who dislike mechanical building and punishing early game.

Short vs. long playtime: Players with hundreds of hours mostly praise the endless build variety, while newcomers more often mention the difficult start and unclear tooltips.

Summarised by AI from 80 Steam reviews (English, helpful and recent), as of Oct 28, 2026.

Best matches

Plays and looks like Primordialis

Close to it by gameplay and by look, so it appears in both lists below.

By gameplay

Plays like Primordialis

Matched from Steam descriptions and player tags. The tags under each game are the ones both games share.

More matches

  1. Muck93 % positive of 185,047Shared: Action Roguelike · Exploration · Rogue-like
  2. The Sapling87 % positive of 1,963Shared: Simulation · Nature · Sandbox
  3. Subnautica 290 % positive of 118,541
  4. SPORE™92 % positive of 67,267Shared: Simulation · Exploration · Sandbox
  5. Thrive91 % positive of 1,711Shared: Simulation · Nature · Sandbox
  6. Dwarf Fortress94 % positive of 29,400Shared: Simulation · Exploration · Rogue-like
  7. Feed and Grow: Fish78 % positive of 20,933Shared: Simulation · Sandbox · Underwater
  8. Creature Crafter86 % positive of 746Shared: Simulation · Physics · Exploration
  9. The Bibites: Digital Life95 % positive of 224Shared: Simulation · Physics · Nature
  10. Monstrum91 % positive of 3,178Shared: Action Roguelike · Rogue-like · Rogue-lite
  11. Infinite Blue64 % positive of 373Shared: Simulation · Physics · Nature
  12. Cogmind95 % positive of 1,582Shared: Rogue-like · Sci-fi · Difficult

By look

Looks like Primordialis

Matched from screenshots. Each card shows the screenshot closest to the look of this game.

More matches

  1. Underminer93 % positive of 1,001
  2. Wall World89 % positive of 11,498
  3. Zero-K92 % positive of 4,426
  4. Astroloot91 % positive of 596
  5. Nebulock85 % positive of 591
  6. Orbitmine81 % positive of 512
  7. Battlevoid: Harbinger78 % positive of 933
  8. Particle Fleet: Emergence92 % positive of 1,202
  9. Vectorio Classic93 % positive of 1,472
  10. To The Core91 % positive of 5,111
  11. Rock Crusher83 % positive of 356
  12. Far Mining96 % positive of 426

At a glance

What games like Primordialis have in common

  • The tags they share most often with Primordialis: Simulation (12 of 24), Exploration (9) and Rogue-like (9).
  • They came out between 2008 and 2026, 3 of them after Primordialis (2025).
  • Best rated by Steam players: Swallow the Sea (97 % positive of 2,470).

How these matches work

Matches come from embeddings of Steam descriptions, player tags and screenshots, computed offline. “Plays like” compares what the games are about and how players tag them; “Looks like” compares their screenshots. The share of positive reviews is based on Steam user reviews.