Aviassembly — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Small patch | 2026-05-05 | Rebalanced engine efficiency curves Rebalanced some wheels Small performance improvement |
| Update 6 | 2026-04-30 | This update is focused on physics improvements. The goal was to add more depth without sacrificing the accessibility that makes Aviassembly what it is. I hope this update strikes a good balance. Engine efficiency Engines now have an airspeed-efficiency curve. This means each engine has an optimal speed where it performs best. This is displayed as a new “optimal speed” stat on each engine. I’m hoping that this will make engine selection a bit more intresting. Helicopter balance You can now thrust downwards with helicopters. This was important to make them more versetile, especially in combination with balloons. I also used the new engine effic |
| The future of Aviassembly | 2026-04-21 | It's been a year this month since the early access release of Aviassembly. Development has been a bit inconsistent, so I want to bring some more structure to it and start pushing towards the full release. I'll be doing monthly updates from now on, with the full release planned for August this year. In this post, I'll lay out the future of Aviassembly in a bit more detail. The updates will primarily be focused on what I believe to be Aviassembly’s biggest shortcoming: the game is too short and not very replayable. Please let me know if the list below is missing any features or changes you think are essential. April: Physics Aviassembly's physi |
| Small patch | 2026-03-05 | There is an issue where the screen suddenly turns white when flying a helicopter. This is the second attempt to fix it, because the previous attempt didn't work. Please let me know if it occurs for you. I also made the helicopter landing gear stronger. |
| Tiny patch | 2026-03-04 | There was a weird crash where the screen turns white and the game crashes. I hope that this patch will fix the issue. Let me know if it doesn't. |
| Update 5: Helicopters | 2026-03-03 | This update introduces a much requested and anticipated addition: Helicopters! I hope this update will enable many creative designs and make new creative solutions possible in the campaign. Vertical flight physicsHelicopters require functioning vertical flight physics and controls, a system that has been completely reworked. This rework benefits all aircraft with vertical flight capabilities, not just helicopters. Designs featuring vertical takeoff, balloons, and other vertical flight mechanics should now perform significantly better. My hope is that this will enable much more creative designs. Helicopter parts I added 5 helicopter parts, inc |
| Small patch | 2025-12-24 | Fixed not being able to respawn at the current base in snow and desert |
| Update 4 | 2025-12-23 | This update focuses on reworking the flight UI. It’s not the biggest or most exciting part of the game, but while I’m brainstorming bigger changes, I felt this update was needed. General UI redesign The original flight mode UI was a bit improvised and rushed. It was inconsistent with the build mode UI and felt cluttered. This update addresses those issues with a full redesign. Unnecessary elements are now hidden dynamically, and smoother animations have been added to improve the overall experience. Speed and Altitude Meters The new UI includes speed and altitude meters inspired by real flight instruments. The speed meter now shows both knots |
| Small patch | 2025-11-20 | Fixed Two birds, one stone triggering when you only make a single delivery Fixed second turbine mission triggering before earthquake Fixed cargo not being saved correctly |
| Update 3 | 2025-11-18 | After a long wait, the 3rd update to Aviassembly is finally here! I hope to release updates more quickly from now on. Achievements This update finally adds Steam achievements to the game. There are 11 achievements now, but I plan to add more in later updates. Let me know if you have any ideas or feedback! Campaign improvements The feedback I received most often was that the game is too short. I wanted to address this, but the tools for editing the campaign were very limiting, especially if I wanted to keep old saves compatible. I decided to completely rework those tools, but it ended up being quite a lot of work. However, I now have much more |
| Important security update | 2025-10-15 | Aviassembly was developed using the Unity game engine. Unity recently announced a security vulnerability affecting some versions of the engine. This patch should address the issue.You can read more about it here: https://unity.com/security/sept-2025-01To quote the blog above: "There is no evidence of any exploitation of the vulnerability nor has there been any impact on users or customers." So as far as I know, there is no need to worry, But: Please update your game to the latest version! |
| Update delayed | 2025-10-14 | Hi everyone,It’s been a few months since my last update, and I had planned to release a new one today, as I mentioned on Discord and the Steam forums.Unfortunately, I encountered some unexpected issues that need more time to resolve. Rather than releasing an unstable build, I’ve decided to delay the update. It may take a few weeks before the full update is ready. I realize this delay is longer than hoped, and I want to sincerely apologize.In the meantime, you can still try the latest changes by switching to the experimental branch on Steam. To do this, right-click the game in your Steam library, select Properties, go to the Betas tab, and cho |
| Small Patch | 2025-07-22 | Added "V" to letter decals. Fixed rocket engine and afterburner flame staying on after being out of fuel. |
| Small Patch | 2025-07-22 | Added "V" to letter decals. Fixed rocket engine and afterburner flame staying on after being out of fuel. |
| Update 2 | 2025-07-21 | Color pickingCustomizing your plane with painted parts and decals is a key feature, but color options were limited. With the new color picker tool, you can choose from an unlimited range of colors to bring your design to life.New partsI added a few new parts in this update:Small retractable wheel3 Cosmetic air Intake / outlet partsRam jetAfterburnerWith the ramjets being added, I felt that it was a good time to introduce a long requested feature: afterburners. Currently, the two turbojet engines in the game have afterburners. You can activate them by pushing the throttle past 80%, but be careful, they consume a lot of fuel.New decalsI added m |
| Small Patch | 2025-07-15 | - Jet engine and propfan engine now paintable - Decals no longer generate drag - Fix wrong base airport spawn issue - Fixed decal mirroring issue - Fixed some decal layering issues - Fixed decals not being destoryed when plane crashes - Fixed runway collision issues at lumbercamp |
| Small Patch | 2025-07-10 | Improved decal move tool Decal scaling on both axis at once now possible Better decal layering calculations Decals recalculating better Fixed parts becoming unselectable after selecting engine settings Fixed decals not disappearing when wing explodes |
| Small patch | 2025-06-27 | Significant performance improvement for changing decal layers Fixed old save files defaulting to relaxed mode Better decal updating when plane is modified Improved decal layering visuals |
| Update 1 | 2025-06-26 | This is the first Aviassembly content update! I’ve been easing back into things after launch, so this update isn’t the biggest one, but I hope that it still contains some exciting features! Decals The biggest change is that you can now put decals on your plane. It turned out to be a bit of a headache to get this working, but I think it is in a decent state now. Some more iteration might be needed to make the feature reach it's potential, so let me know if you have any suggestions or encounter any issues! I also added tools to layer multiple decals on top of each other. This should make it possible to combine decals and create much more comple |
| Small Patch | 2025-04-30 | Fixed building camera being zoomed out very far Fixed plane editor bug causing everything to be unselectable Fixed running out of money in creative mode Removed some cheats |