Steam app 3011360 · updated 12 Sep 2026, 20:13 UTC
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.
714 hourly samples, with the daily peak drawn over them. Weekends are shaded.
15 months, July 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 433 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 281 hourly samples. Each dip is a night. Weekends are shaded.
Primordialis was released on 2 Jul, 2025.
| Language | Full audio |
|---|---|
| English |
A blank audio cell means full audio was not marked in the returned language list.
5 achievements in total.
21 developer announcements, Oct 2024 to Jul 2026 · times in UTC
Here's a general overview of my current plans for early access development. This list is not in chronological order aside from the dividing lines, and plans may change slightly
kaliuresisHello everyone! It's been a while so I should probably explain why this has taken so long, which is mostly me getting caught in a loop of some things taking longer than expected and feeling like I need to have more new things prepared to…
kaliuresisThe Primordialis original soundtrack is now available on Steam and other platforms!To celebrate the game is on sale for 35% off, and if you buy the game and soundtrack together you can get another 25% off the bundle.The soundtrack is also…
kaliuresisHappy Holidays!Primordialis v0.1gameplay changes & features:- Final music polish from Phrakture- A couple new creatures from Keith- Shrunk 4th and 5th biomes- Reduced number of entrances from first biome to the dark biome to prevent new…
kaliuresisI'm happy to announce that CleanFall and Primordialis can now be purchased together for an extra 10% discount! CleanFall is an awesome new rogue-lite that just released today in early access! If descending into a mysterious hole on a ship…
kaliuresisYou can now access the Primordialis beta branch by right clicking the game in your steam library > Properties > Betas then set Beta Participation to the beta branch. The beta branch will have previews of upcoming updates. The beta will…
Patch notes- Fixed cell icons disappearing after changing resolution - Added new sandbox map type (unlocked after winning a normal run) - Fixed left behind mutations showing up in the final boss fight
Patch notes- Fixed getting stuck on loading screen when audio initialization fails
Patch notesI'm pleased to announce that the Primordialis + Nova Drift bundle is now available on Steam! If you already own one game or buy both together you can get a 10% discount. This discount applies in addition to any individual sales on the…
klr- Steam integration is no longer disabled when ARB_imaging is not supported by your graphics driver. This precaution was previously in place since the Steam overlay would make invalid opengl calls, but after further testing I believe these…
Patch notesThe Primordialis early access has released!Here are the patch notes from the previous demo (non-beta) build: Primordialis v0.0hotfix d:- Fixed crash that could occur when changing resolutionhotfix c:- Temporarily disabled controller…
klrAs you may have noticed June 30th has passed and the early access version of the game has not released yet. Unfortunately the game build was not approved by Steam due to some bugs with controller support that didn't occur in my own testing.…
klrHello everyone! It's been a while since the last demo update so I wanted to give an update on what's been going on. Beta Branch If you missed it, the demo has a beta branch, which you can enable by right clicking the game in your steam…
klrNOTE: To access your saved body plans from before the update, right click the game in your steam library->manage->browse local files. Your old body plans will be in the body plans folder, unless you manually saved them to a different…
klrgameplay changes & features: - A couple more enemies from Keith - Seasonal enemy disabled (you can set your system date if you want to experience it) - Imbued mutations now show you 5 options for cell types instead of 3 - Added a slider to…
Patch notesgameplay changes & features: - New cell types: Acid cell, Ink cell, Vacuum cell, Linking cell, and Self-colliding cell - More creatures from Keith - Added some festive parasites - Combo cell icon now changes based on the combined cell types…
klrgameplay changes & features: - New cell types: Root cell (sandbox only), Minion neuron, Fearful neuron, Seek trigger cell, and Negating cell - Anchor cells have been updated and are now obtainable - New mutation: Drifting - Many new…
klrgameplay changes & features: - Added Sandbox mode - Three new cell types, Capacitive cells, Inductive cells, and Inflating cells. - You can now pan and zoom in the editor using the arrow keys and page up/down, in addition to middle mouse…
Patch noteschanges & features: - Initial upgrades now show 5 options for new cell types instead of 3. After level 4 it will go back to 3 options. This intended to speed up the early game - Added new button in body plan editor that toggles…
Patch noteschanges & features: - you can now save and quit mid-run, the game will also autosave every ~10 seconds - poisonous cells are now immune to the effects of mutagenic poison - made first biome smaller, with increased xp drops per enemy…
Patch noteschanges & features: - added patchnotes which show when you click the build version in the main/pause menu - leeching and injecting cells now transfer poison as well - made jet cells more yellow - particles from jet cells are now tinted by…
Patch notesWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | primordialis.exe | windows |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataRoaming | Primordialis | *.bod and below |
WinAppDataRoaming | Primordialis | *.txt |
WinAppDataRoaming | Primordialis | *.run and below |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG