Warhammer 40,000: Mechanicus II

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• Patch Notes·7 Sept 2026Official

  Public Beta Branch – Performance Update

  Hi everyone.While we continue work on the next update, we’ve made a new build available on the optional public_beta branch on Steam.This build includes further work aimed at improving game performance. Our internal testing across a range of hardware has been very encouraging, but PC performance can vary considerably between different systems, so we’d like to test the update more widely before considering a full public release.If you’ve previously experienced poor performance in Mechanicus II, we’d particularly appreciate you trying the beta and letting us know whether you see an improvement, no meaningful change, or any new issues.For feedback and bug reports, please use our bug report form. Where relevant, please include your CPU, GPU, resolution, graphics settings and whether you’re using DirectX 11 or DirectX 12.To access the public beta:Right-click Warhammer 40,000: Mechanicus II in your Steam Library.Select Properties.Open the Betas tab.Enter mechanicus2beta into the private beta access code field and select Check Code.Select public_beta under Beta Participation.Steam should then automatically download the build.To return to the current public version, select None from the same menu.Thanks as always for your feedback.
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• Patch Notes·6 Aug 2026Official

  Bug Fix Update Now Available

  This new bug fix update focuses on confirmed gameplay, progression, stability, visual, and localisation issues reported since release. This includes fixes for several mission blockers, crashes and combat or skill-related problems, alongside a new setting intended to reduce CPU load on some systems.We know some players are still waiting for further improvements to performance and other technical issues, this update is not intended to address that. The broader optimisation work continues separately and we'll share updates on that as soon as we can.You can find the full list of changes below. The changelog is available in English only.Campaign and ProgressionFixed missions becoming impossible to start after investing in Scaevola’s Eradication Ray upgrades while she had numerous active perks.Fixed the Forge City Assault mission failing to trigger after awakening all three tombs surrounding Zeocene.Fixed the Mission Failure screen not appearing when Faustinius was defeated during the final skirmish of Jaws of Defeat.Fixed Command Protocols disappearing after loading an autosave during the final skirmish of Regicide.Combat, Skills and UnitsFixed a brief freeze when the Lokhust Heavy Destroyer used the Enmitic Exterminator.Fixed a crash that could occur when a Tesla Carbine attack struck destructible scenery.Fixed Killcycle Canticle granting Multiple Uses on the first use of Invocation of Machine Vengeance and not stacking correctly after repeated uses.Updated Videx’s Ritual description to clarify that allied units cannot activate Canticles while the Ritual is being performed.Updated Machine Spirit Resurgent to clarify that Accelerated is only applied to units within 5 tiles when its Data-choir condition is met.Updated the description of Accelerated to remove an incorrect numerical value.Updated Videx’s upgrade text to clarify that only Videx’s Rituals cost 1 fewer CP to conduct.Fixed the Battleware Override trait tooltip not appearing when highlighting Scaevola’s Battlewa...
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• Patch Notes·24 Jun 2026Official

  Performance Update – Unity Upgrade, New Graphics Settings and Bug Fixes  

  Hi everyone. Today, we’re releasing a major technical update for Warhammer 40,000: Mechanicus II, built around an upgrade to a newer version of Unity. Internal testing and feedback from the public beta of this build indicate that the upgrade improves baseline performance and optimisation across a wide range of hardware configurations. However, performance gains will vary depending on your system and settings, and we want to be clear that some players may see limited or no noticeable improvement from the engine upgrade alone. To provide greater control over performance, the update also introduces two new graphics settings: Mesh LOD Quality: Controls the level of detail used for 3D models at a distance. Reducing this setting may improve performance, particularly during larger or more visually demanding skirmishes.Background Effects: Controls the visual effects displayed in the backgrounds of environments. Reducing or disabling these effects may improve performance in affected areas.We recommend experimenting with these settings to find the best balance between visual quality and performance for your system.We have also added a much-requested option to restart a mission from the War Map before it is launched. This allows you to reconsider your deployment and select a different leader or force without needing to reload an earlier save.Our support for the game is continuing, and we will keep reviewing player feedback and investigating reported issues following this release. Please look forward to future news and updates. Thank you to everyone who has submitted bug reports, tested the public beta or shared detailed feedback with us. Your reports have been extremely valuable in helping us identify issues, verify fixes and prioritise our ongoing work. We also greatly appreciate your continued patience and support.Alongside the Unity upgrade, new graphics options and mission restart feature, this update contains a large number of bug fixes. You can find the full changelog (E...
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• Patch Notes·12 Jun 2026Official

  Performance Update Available on Beta Branch

  Hello everyone.As previously mentioned, the team is currently working on a performance-focused update for Warhammer 40,000: Mechanicus II. This build includes a major engine update, with the aim of delivering meaningful performance and optimisation improvements.The build is still undergoing testing on our side. However, because PC performance can vary significantly depending on hardware, drivers, settings, Steam cache state and other system-specific factors, we also want to gather feedback from a wider range of real player setups before moving the update to the main live branch.For that reason, we’re making the upcoming performance update available through an optional public Steam beta branch.This will allow players who are currently experiencing performance issues, or who simply want to help test the build, to try it ahead of the full release and share feedback with us.Beta Branch DetailsBranch name: public_betaBranch password: mechanicus2betaInstructions on how to access the branch:Right-click Warhammer 40,000: Mechanicus II in your Steam Library.Select Properties.Go to Betas.Enter the beta access code above.Select the beta branch from the dropdown once it appears.Allow Steam to update the game.To return to the current live version, go back to the Betas menu and select None.Please remember:This is an optional beta branch, not the default live version of the game.The build is still in testing and may contain issues or regressions.We’re not asking all players to switch over – only those who are comfortable testing a work-in-progress build.The current live branch will remain available as normal.Feedback from the beta will help us better understand performance across a wider range of hardware before the update is released fully.Reporting Performance IssuesIf on the beta branch you continue to experience severe optimisation or performance issues, please report them through our existing bug report form (https://forms.gle/L6JrusUkoSzaZU5PA).When reporting performance iss...
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• Patch Notes·4 Jun 2026Official

  We Hear You – Bug Fix Update and Ongoing Optimisation Work

  First, thank you to everyone who has reported issues and shared feedback since the launch of Warhammer 40,000: Mechanicus II.We know we’ve been quiet since launch. That hasn’t been because we’re ignoring the issues being raised – it’s because the team has been focused on investigating, fixing and preparing updates as quickly as possible.We’re painfully aware that many players are experiencing performance issues, including lower than expected frame rates and unusually high GPU utilisation. Improving performance is a critical priority for us, and work is continuing on a more substantial optimisation update.Today’s update addresses a number of commonly reported bugs and includes a small FPS improvement for many players. However, we want to be clear that this update is not intended to resolve the main performance concerns raised by players. That work is ongoing and will require a further update.We understand how frustrating these issues are, and we appreciate your patience while we work to address them. We’ll share more details on the optimisation update as soon as we’re able.Update 1.0.0.25 Patch NotesGeneralImplemented a change that results in a slight FPS improvement for many players.Fixed an issue where the Shadow Quality setting could reset to High after relaunching the game.Fixed a missing placeholder icon for some skills.Fixed an issue preventing certain territory expansion missions in the Adeptus Mechanicus campaign from loading.AudioFixed a number of SFX being incorrectly tied to VO volume.Fixed some missing VO dialogue.Fixed some instances of dialogue being wrongly assigned to different characters..GameplayFixed an issue where Videx’s Motive Force skill could grant an incorrect number of Energized stacks.Fixed an issue in the Vindication skirmish where reaching the extraction area before killing all enemies could incorrectly result in a defeat.Fixed an issue where triggering a Kastelan Robot’s Deadly Demise trait could skip allied unit turns and disrupt turn o...
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