Environmental interactions get a lot more varied in this new latest version of Thrive. The first major change is that there are now environmental tolerances to consider. This means that your species needs to be adapted to the conditions of the environment you want to live in: temperature, pressure, UV, and even the presence of oxygen. Also added are new environmental chunks like the radioactive chunk shown in the first image. It will cause damage to microbes that cannot resist radiation.

Also in this release we finally have a fully finished thermosynthesis gameplay, though it might not be exactly fully balanced yet as we didn’t get that much balance feedback on the public test build last week. And of course along with the major new features we have a ton of small tweaks, graphics and GUI improvements as well as bug fixes. One highlight is that we now have an exclusive fullscreen option which should help anyone wanting to play in fullscreen mode on Windows.

Read on for more details or play the new update now.


A long awaited feature, environmental tolerances are now implemented in Thrive. Life in Thrive now must adapt to different conditions across their planet, simulating an important aspect of your species’ evolutionary story.

There is now a section of the editor devoted to environmental tolerances, where players will be able to examine and control their preferred environmental conditions. Inhabit a patch with unfavorable conditions, and you will suffer penalties in gameplay and auto-evo performance. Adapt well to a patch, and gameplay bonuses will be received by your species.

This feature will make patch migration and player movement more strategic in nature, and – combined with other features in 0.8 – will provide an engaging simulation of life’s story on a young, changing planet. Balancing is an important part of making this feature as fun as possible, so feedback is deeply appreciated.


Be wary of a strange, green light: radiotrophy is finally in Thrive.

Radiotrophy – a unique metabolic strategy undertaken by some fungal species here on Earth – involves the generation of energy from captured radioactivity. In Thrive, we have introduced radioactive chunks, found in hydrothermal vents and caves.

Absorbing too much radiation is dangerous, especially to unadapted cells – however, cells with melanosomes are able to metabolize a certain amount of radiation, providing a powerful source of energy. Be careful though: even cells with melanosomes can overdo it. Though, with enough melanosomes extreme amounts of radiation can be overcome.

Along with being an engaging metabolic pathway, radioactive material also serves as an interesting environmental hazard. So if your organism lives in a patch with radioactive material, tread carefully!


Along with radiotrophy, thermosynthesis represents another unique metabolic pathway added to Thrive.

Thermosynthesis generally involves the use of heat gradients in order to generate energy. In Thrive, players with thermosynthesizing proteins are now able to toggle a thermal display of their environment showing local fluctuations in temperature. Players must navigate between cold and warm spots in order to generate energy – going from colder to warmer spots specifically generates energy.

Thermosynthesis is currently a theoretical diet, and thus is only accessible in non-LAWK playthroughs (toggleable setting when starting a game). However, thermosynthesis is theorized to have been very important for the most ancient of lifeforms on Earth – so future research might make this diet available in a standard, LAWK Thrive playthrough.

One of our developers evolved an organism fully dependent on radiotrophy and thermosynthesis, calling it an exciting yet challenging existence. We challenge our community members to replicate such a fad diet!


Some work has been put into our patch map to better increase player accessibility. Most notably, connections between patch regions are now much more visible, allowing players to better understand where to move in order to escape a region. Graphs in the report have also been moved around in a way approximating importance in order to increase readability.

• Added microbe background blur and enabled distortion effect by default
  
• Added an option to select between the different fullscreen modes supported by Godot Engine. When using exclusive fullscreen mode this fixes a one pixel border problem on Windows.
  
• Late multicellular was split into its own full stage: Macroscopic
  
• Implemented multicellular organism statistics panel
  
• Various improvements to auto-evo to allow it to evolve new organelles / upgrades. And improved the microbe AI to be able to use newer features of the game.
  
• Fixes to the organelle suggestions feature to make it not suggest the nucleus too early
  
• Improved cell image generation to make it less likely for the images to be cutoff
  
• Tutorial and Thriveopedia tips page improvements

A full list of changes is at the end of this post.


As always remember to join us for our developer Thrivestream later today, where we’ll cover the changes in this release and answer any questions you might have about the future of development. We’ll also answer the usual question of what’s coming in the next releases.

You can visit our feedback thread[community.revolutionarygamesstudio.com] to give your thoughts on this update or post your feedback in the comments below. And to report the sure-to-still-exist bugs in the tolerances system.

p.s. if someone missed our previous art contest, the results were published here[revolutionarygamesstudio.com].

• Added environmental tolerances, which means cells need to be adapted to the temperature, pressure and other stats of the patch they live in or otherwise they get various negative effects. Conversely perfect adaptation leads to bonuses.
  
• Added radiotrophy as a new food source, which allows using radioactive rocks to generate energy
  
• Thermosynthesis is now finally fully implemented. The feature now requires moving between local hot and cold areas to generate energy only when the cell's temperature is going up.
  
• Added microbe background blur and enabled distortion effect by default
  
• Added region connection lines to the patch map and tweaked its visuals to make it clear which patches link together
  
• Added an option to select between the different fullscreen modes supported by Godot Engine. When using exclusive fullscreen mode this fixes a one pixel border problem on Windows.
  
• Late multicellular was split into its own full stage: Macroscopic
  
• Implemented multicellular organism statistics panel
  
• Added per cell type ATP balance bars to the multicellular editor
  
• Increased auto-evo population change effect strength on the player from 20% to 50% and made it a configurable difficulty option
  
• Changing organelles back to their base state no longer refunds the upgrade cost. This fixed an infinite MP exploit with the refunds
  
• Improved the accuracy of the algorithm used by organelle suggestions, this should make the suggestions more accurate and no longer suggest adding a nucleus too early
  
• Made environmental light match the gameplay light cycle to make the environment darker during the night
  
• Marine snow density now depends on existing species instead of always being there
  
• Improved microbe AI to be able to use the feature to enter engulf mode even if out of ATP
  
• Tweaked thermosynthesis related text and icons
  
• Updated various icons to be SVG files to no longer be blurry at high resolutions
  
• Added displays in the editor to show reproduction cost in terms of ammonia and phosphates
  
• Improved cell image generation to make it less likely for the images to be cutoff
  
• Updated various tooltip and tutorial text to be more clear and accurate in relation to new game features
  
• Added a new overall tips Thriveopedia page to help new players
  
• Added the miche viewer to the auto-evo prediction explanation popup
  
• Added sulfur chunks as energy sources to auto-evo
  
• Added a new sulfur chunk variant
  
• Auto-evo can now evolve the slime jet
  
• Auto-evo can now evolve the mucocyst
  
• Added lysosome effects to auto-evo and made auto-evo able to evolve them
  
• Added a tutorial about early goals to the microbe editor (finding a good patch and then getting the nucleus)
  
• Added a tooltip for the cell rotation rate stat to explain that organelle placement affects it
  
• Added an option to the growth order menu to show organelle coordinates, which now defaults to off for clearer look
  
• Reordered the charts in the report tab to have more important ones at the top and environmental conditions last
  
• Increased efficiency of organelle position finding code for organelle growth so that big cells don't cause lag spikes
  
• Added Banana Biome Easter Egg
  
• Changed migration button to say "Migration Manager" to hopefully clear up the functionality
  
• Increased efficiency of position calculation for new organelles in auto-evo which should increase overall simulation speed by about 20%
  
• Fixed the organelle suggestions system sometimes suggesting unavailable organelles like myofibril
  
• Fixed the alternative compound balance mode not working at all
  
• Fixed membrane stat comparisons in tooltips and made them only show stats that are different to the currently selected membrane
  
• Fixed auto-evo prediction not updating on patch change or on behaviour slider change
  
• Fixed tutorial lines that pointed to nothing by allowing tutorials to temporarily hide the lines if there is nothing to point to
  
• Fixed the editor sometimes needing multiple clicks after closing a popup menu by making sure our input manager always forwards key up events to all listeners
  
• Fixed patch events showing on undiscovered patches
  
• Fixed sprint strain bar continuing to go up when engulfed
  
• Fixed the lysosome upgrade GUI being slightly too short and having a scrollbar
  
• Fixed hitting floating toxins in engulf mode triggering a message about being too small to engulf them
  
• Fixed the game getting locked up when trying to move the rigidity slider when you have exactly 0 MP
  
• Fixed inventory icons being behind some windows when dragging them
  
• Fixed patch notes popup not grabbing focus correctly
  
• Fixed modal popups staying open when moving on from an editor component
  
• Fixed an error in multicellular editor when clearing the cell selection
  
• Fixed an issue in our native lib management tool incorrectly checking for Mac libraries in certain usage situations
  
• Refactored MP system to calculate things as floats to make smaller edits work better (especially with lowered mutation cost)
  
• Endosymbiosis processes are now cleared when entering multicellular to not permanently lock the player out of a potential food source
  
• Added clarification in chemoreceptor tooltip that it can also be used to detect cells
  
• Added a tooltip for the compound handling modes in the new game setup to try to explain the rough idea behind each mode
  
• Improved zoom behaviour in the evolutionary tree and tweaked the dragging limits
  
• Updated all of the social media buttons in the main menu
  
• Removed an unnecessary memory allocation in auto-evo organelle upgrade attempt code
  
• Made our custom modal dialog manager close open dialogs when changing scenes as the old parent GUI is deleted
  
• Changed direct multicellular starter cell to work with the new no oxygen environment
  
• Removed extra data calculations from auto-evo energy balance calculations
  
• Refactored code related to the microbe editor organism panel
  
• Removed trailing spaces from the chromatic shader
  
• Steam: updated the wording on our thanks for buying the game message to avoid negative undertones. The thanks popup also now defaults to being permanently dismissed after clicking OK once.
  
• Added a new translation: Japanese. Only a little bit of the game has been translated yet so please help out if you can.
  
• Added Tatar language to be selectable, though the translation work hasn't started yet. If anyone can help out this translation, please do.
  
• Updated Thriveopedia content
  
• Updated setup instructions to tell to install dotnet 9
  
• Bumped license year to 2025
  
• Tweaked Dependabot configuration for dependency updates
  
• Updated AngleSharp from 1.1.2 to 1.2.0
  
• Updated Harmony to 2.3.5
  
• Updated Nix build flake
  
• Updated System.IO.Hashing from 9.0.0 to 9.0.2
  
• Updated translations

It is once again time for early testing of the next Thrive release, 0.8.1. This release has a lot of new gameplay features like environmental tolerances, radiotrophy and reworked thermosynthesis gameplay. And there’s also the usual bunch of smaller changes. One other highlight is that there is now an exclusive fullscreen mode that should improve things for everyone on Windows who want to play in fullscreen. Please report to us if the one pixel border and slightly wrong resolution problems are gone now.

This testing build is a bit more raw than we would have preferred as the environmental tolerances feature was literally “finished” just a few hours ago. So please don’t be too harsh on it. But do report back how it changes the feel of the game. There is a known problem where the tolerances GUI gets messed up when loading a save made in the editor, so please don’t report that again as we are aware of it. Also it is very easy to get into negative MP when using the tolerance sliders. There's been multiple reports about that already so we don't need more, thank you.

To access the beta build, right click Thrive in the Steam client and in the properties opt into the "beta" branch.

As usual please post any feedback you have on this test build on our forums[community.revolutionarygamesstudio.com] or the comments below. We are especially interested in the current game balance as many of the new features haven’t had time to be balanced well so we expect them to be unbalanced currently. We will try to get the game balance as good as possible before the full 0.8.1 release in one week.