- 1.0.3 Public Test Build Revision 2 - 19 June 2026
Hello! Only around a day since the release of this test build and I've gotten some amazing feedback. Due to this, I've managed to put together some small changes and bug fixes that should make the update more enjoyable. Please remember that if you wish to submit feedback, either do so in the Community Discord server using the feedback, suggestions and bug reports channels, or send me an email at [email protected] 1.0.3P2 ChangelogGameplay ChangesAR ChangesSignificantly decreased the accuracy of all AR at low powerMade the "Power Increase Restricted" indicator functionalRemoved the requirement for a systems mode to be set to "Auto" for its sensors to workOther ChangesChanged the volume and mixing of some sfxMisc changesMinor UI changesBug fixesFixed an issue which caused the USM sensors to not work correctlyFixed an issue which caused the UZM setpoint to be occasionall…
- Rasvyat 1.0.3 Public Test Build is live - 18 June 2026
Hello! The 1.0.3 public test build is now available via the Steam "betas" tab and will continue to be available over the next few weeks, all the while I will be taking user feedback and possibly releasing subsequent test builds before publishing the final build. 1.0.3 (Public Test Build) ChangelogNew ContentAR-1AR-2ARMVarious New Sensors for the AR systemsEaster EggGameplay ChangesAZS ChangesAZSP is no longer restricted from use at high powerAZSR is no longer restricted from use at low power"AZSP(R)" AZ-5 reason retiredAZM ReworkRe-added AZMMAZMM can now be enabled and disabledAZMM cannot be used over 150MWt without being triggeredAZM cannot be used under 80MWt without being triggeredOther ChangesSignificantly reduced reactor stabilityChanged the sensitivity of the channel rupture eventChanged the sensitivity of the "Water Decrease" annunciatorMisc changesAdded a cooldown to the automat…
- New Public Test Build Coming Soon - 15 June 2026
Hello again!The state of 1.0.3 Following the recent pause / break, I've made enough progress on the 1.0.3 update to release a public test build, this is not the complete update and is still missing the tutorial and a few other things.When is the PTB coming out?I will be releasing the public test build over the next couple of days with the full list of patch notes, however it's important to stress that this is not the final product, I will be heavily taking feedback on this patch, any suggestions or feedback on the new systems and reworks will be greatly appreciated.What will the PTB contain?The public test build is essentially the "skeleton" of this update, it's primarily a new system and a few things to try address a few bugs, but is largely untested and not completely polished at this stage.The automatic regulator systemAnother rework to AZS to go along with the changes to AZMAZMM is…
- Followup / Clarification - 12 February 2026
What did "parting ways" mean? Unfortunately a lot of people saw the phrase "parting ways" and assumed it meant I was canceling development. This is not the case, and instead purely refers to me severing my relationship with the games publisher. What is happening with RNPS development? It is being paused, NOT canceled as a lot of people were thinking (Paused meaning a couple months of inactivity) I may still occasionally "tinker" with the project in my general absence, but my role in it will be extremely decreased temporarily.Why is it being paused?I was quite vague in the original announcement, so I'll be a little more specific.I spend a lot of time on this project, to the point I can't even easily fit in things like work or my future projects.I have spent an extremely long time working on this project, a lot of people aren't fully aware of this games history but to brief; I started wor…
- Parting ways with Wrenchy Productions & A few other changes - 11 February 2026
I'm going to quickly prefix this announcement by saying that this is far more direct than normal, but regardless I think honesty and directness is important here. Wrenchy Productions Alright so I'll just cut to the chase here, I'm cutting ties with Wrenchy Productions due to a generally unprofessional atmosphere caused by a personal and professional overlap, combined with the fact I don't see any value in a continued partnership, regardless I do wish them well.Creator Rewards Due to a general lack of activity with the creator rewards program, I will be fully shutting it down by the end of this month, anyone who is still owed money and has not filed a request, please do so now.Future UpdatesI'm taking a break from updating this game to focus on my own path forward and my future projects, I'm still young, but I'm having less and less time to actually work on this game, while also managing…
- 1.0.2a Changelog - 29 December 2025
This is a small update but I hope it makes the game a little better regardless, Merry Christmas and Happy New Year!Completely new button SFX (From real RBMK equipment)Bug fixesPhysics Tweaks
- 1.0.2 Released - 25 December 2025
1.0.2 ChangelogNew Content Added the ability to manually zoom in and out with the scroll wheel (along with still having a manual zoom with right mouse) Temporary Christmas main menu theme Various bug fixes Various physics tweaks (For the full list, check the PTB patch notes) Important NotesThe AR system is still being worked on, and will be added in a small patch down the roadIn addition, the in game tutorial has been disabled and will not be re-enabled until said small patch, until then, new players can watch the official guide on my channel as it has a lot more detail than the in-game one
- Rasvyat 1.0.2 Public Test Build is live - 14 September 2025
I haven't directly announced this on Steam until now (Only in the Discord previously), however I've been running some test builds for the 1.0.2 update, and the first mass scale one is now live on the public-test-build branch. It should be noted that this is not the complete 1.0.2, it is still missing some features (namely the automatic regulator system that's going to be added in this update), however it does still include several new optimisations, quality of life changes, graphical improvements and reworks to other things in game. With all that being said, please make sure to report any bugs you find in the community Discord server in order to improve the full 1.0.2.Wrenchy ProductionsAs apart of a publisher deal with Wrenchy Productions, Rasvyat is partnering with them. This will not impact the creative direction of the game whatsoever, and moreso exists as a way to establish a partn…
- 1 year of RNPS! - 18 July 2025
RNPS's 1st birthdayIt's officially Rasvyats first birthday! To celebrate this milestone, I'm doing a 15% off sale. It's been a pretty crazy year since the release of the game, and I genuinely appreciate every single one of you :)RNPS 1.0.2As those of you inside of the Discord server will know, I'm releasing another RNPS patch based on the original 2022 legacy codebase as a way to return to development from my break (Which I will elaborate on later). This update isn't going to be anything too flashy, however it will be heavily revamped under the hood (albeit nothing even remotely close to 1.1), with significantly better performance, multiplayer improvements and even a couple reworks, and I expect it to be releasing in the next week or so.Developer LivestreamsAnother repeat from the Discord server, however I'm announcing that at some point after the release of 1.0.2, I will be doing live…
- Why did 1.0.1 take so long and what comes next? - 5 March 2025
Around a week ago I released the 1.0.1 update, and upon doing so many of you were probably disappointed by how little the update actually added in comparison to how long it took, so I thought I'd shed a little light on why it took so long, the rough history of the game, the development issues and what you can expect for future updates. Pre-release History I started making this game in September 2022, in this stage of development, I was not going for realism, but rather for simplicity, the game only had a total of 3 buttons, those being "Raise Control Rods", "Lower Control Rods" and "AZ-5", there were no pumps, no water, no temperature, just the thermal power and incredibly basic rods, even the flux and thermal power was more simplified than what we have today, in that it was either always decreasing, stable or always increasing. At some point in early 2023, I begun to shift my focus fro…
- Version 1.0.1 | Small Update - 25 February 2025
New content Added an optional tutorial to also help newer players Added optional challenge modifiers for players who have started the reactor at least once Added various extra labels to help newer players Added some extra annunciators to reduce some confusion Gameplay changes Added an "Anti-cheese" to the AZ-5 malfunction system in order to prevent players from being able to force it with an auto-clicker Added the "System wear" mechanic, a simple system that slowly increases the likelihood of a malfunction occurring the longer you go without one Slowed the rate iodine decays into xenon slightly Slowed the rate xenon decays from the reactor drastically Slightly modified the conditions for control rod jamming Misc changes Updated outdated UI elements to be more coherent with the game theme Modified some annunciator text Updated several music tracks used in game Changed the colours of some…
- Testers - 5 November 2024
Hello! I've been working on RNPS a lot over the last few weeks, and I'm looking for some testers to help me test some things here and there, however I should make it very clear that being a tester doesn't mean you just get early access. You'll be preforming some somewhat structured tests in the game in which I explain the basic direction I want you to go, and then you do it, explaining everything you do along the way and reporting any issues you find, along with providing feedback on things such as preformance, gameplay and overall changes. You can apply to be a tester on this google forms page here https://forms.gle/SGbU8aKb4VBSqyhv8
- Development issues - 25 July 2024
I'm sorry for all the issues that are happening with Rasvyat at the moment, such as the "Spawning Player" bug, or the horrible optimization and the numerous other bugs. I'm genuinely doing my best to fix them as I care about this game and about all of you, but every fix I do just causes another bug, and so on so on, meaning 1.0.0a may take a while, even other random bugs are popping up out of nowhere as I develop this update with no logical explanation or fix in sight, such as all inputs completely breaking after closing the settings menu in-game. I'm trying my utter best, please don't think that I've given up, I really haven't, it just may be a little while until I can get this update out.
- Rasvyat is now out! - 17 July 2024
Rasvyat has released 3 days late, sorry for that, however it is now out, there's currently no in game tutorial, sorry, however the game is now available. There are currently a lot of bugs however they will be resolved in the coming weeks, there is a multiplayer issue where the player may get stuck on the "Spawning Player" screen on some lobbies, the only real solution currently is to press ALT - F4 to force exit the game and host your own lobby, sorry for any inconvenience.
- Final Progress Report Prior To Release - 11 July 2024
Preparing for release progress report I have hired my first map builder to help out, Ade, because of Ade the release will have a fully flushed out control room. Beyond this, I have added several new things myself: A new pump system which will be finished at some point after release New button and switch models to replace the old blocky placeholders Basic xenon simulation New alarm sounds Unfortunately, since I now have someone else working on the project with me, and because I will be hiring more developers in the future in order to rewrite several older parts of the game, plus getting out updates quicker, I have decided to make the game paid on day one. To make up for this, I will be giving away 30 free keys on launch day in my Discord server, along with this, I'm going to be making the game 40% off for the first week after launch. Thank you all for sticking around with me for the past…
- Version 0.12.4 | Bug fixes and malfunctions - 13 May 2024
Content Random Malfunctions, UZS and UZSR sensors, AR, and AZ-5 can now malfunction. Added some new annunciators. Changes Modified some annunciator functionality. Changed blackouts to run on the same logic as malfunctions for consistency. Changed EPS cover SFX. Bug Fixes Fixed a bug that caused the reactor period sensors to become desynced on the client. Fixed a bug that caused EPS cover positions to become desynced. Fixed several issues with the selsyns. Sprinting works again.
- Version 0.12.3 | Bug fix, quality of life, and feature update. - 9 May 2024
Content Automatic shutdown systems are now re-enabled. Pumps now wind down far slower. Channel ruptures can now be heard from the control room. Modified the conditions and worsened the affects of a channel rupture. Added a new pause menu and settings menu. VSync can now be enabled. Your FPS limit can now be changed. Added player nametags. Added a new music system (Unfinished). Added functionality to the annunciators on the SAOR panels. Bug Fixes Reactor period sensors now work again. Fixed various switches not working correctly on the hosts end. Fixed various server backend functions. Fixed many issues with voice chat, you should be able to speak in game again. Fixed a bug that caused the players mouse to be in the wrong input mode in certain situations.
- Release Date - 25 April 2024
As previously announced, the release date was delayed to June 30th, however this unfortunately clashes with a Steam sale which would affect the games visibility on release day, which would mean less players and a worse experience overall. As a result the final date is July 15th, 15 days more than the original voted time.
- Release HAS been delayed - 20 April 2024
Hello everyone, as the title states, Rasvyats release date has been delayed. Previously I made announcements on Steam, Discord and YouTube asking if you wanted to delay the initial release due to development being behind schedule, and the majority of you HAVE voted for a delay, meaning the game is now going to release on June 30th to allow me more time to finish the game and implement more features.
- Release date - 13 April 2024
The game is currently in a buggier state than expected around the general time of release, I could release it now in its current state, however this would lead to the game having many unfinished features and completely broken things as is, I'm currently running very low on time to actually get the game ready for release and do not think I'll be able to. However as I've already promised a release date (April 26th) I'll leave it up to you all to vote on if you want the games first build delayed or released on the expected date. I'm very sorry for all of this, I just want the game to be as good as possible for you all upon release, rather than giving a completely broken build. To make your opinion count, you can vote on this poll https://forms.gle/C4KdDtCn3yRae3QSA
