About the Game
Build A Plane
Create your own plane. Balance fuel capacity, weight, speed, cargo space and more. Choose parts carefully to optimize your plane for the desired flight characteristics.
Complete Missions
Test your plane, complete missions, and earn money. You'll need to haul different cargo types, each with unique requirements, so plan your trips carefully and avoid running out of fuel.
Research and Upgrade
Research new parts and improve your designs to fly farther, faster, and carry more cargo. Upgrade your plane to handle bigger missions and explore new areas.
Explore
Explore an open world and find new airports and islands, each offering new challenges to test your plane designs and piloting skills.
Features
Build your own airplane and optimize its performance.
Takeoff, fly and land your plane with physics based controls.
Explore and discover new biomes, each offering unique challenges and cargo types.
Transport and sell different cargo types. Each cargo type offers its own unique challenge.
Get creative in creative mode. Use your infinite resources to build anything you can imagine.
Screenshots
12 images
Version Information
Steam Patch Notes
Official update history
- Fixed performance issues with propeller engines
- Fixed invisible helicopter rotors
- Fixed upgrade hint in the wrong place
- Fixed slow backwards taxing
- Improved explosion visuals
- Rebalanced engine efficiency curves
- Rebalanced some wheels
- Small performance improvement
- 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
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-2025-01
To 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!
- Added "V" to letter decals.
- Fixed rocket engine and afterburner flame staying on after being out of fuel.
- Added "V" to letter decals.
- Fixed rocket engine and afterburner flame staying on after being out of fuel.
- 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
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
- 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
Current Release
23497164
Uploaded Jun 15, 2026
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System Requirements
How to Install
Aviassembly.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
130 MB
23497164
1C6F9E97
7b976bcbe00f349ced59a13e0f13dd772454933d1002bcca0c6405d0563c72ca
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Download Aviassembly for PC with a direct link or via torrent. Get the full version of Aviassembly for free. Aviassembly is a Simulation released by Jelle Booij.