MSFS 2024
Atmos CORE
Next-gen atmospheric engine
Total, real-time control of atmospherics, clouds and lighting — injected directly into the MSFS 2024 engine, not layered on top.
Flight Simulation Enhancements · Since 2006
Transform your flight sim experience.
Premium, trusted add-ons for Microsoft Flight Simulator 2024 & 2020 that make your sim more realistic.
The Collection
Add-ons engineered for realism
Five flagship tools that work beautifully on their own — and even better together.
MSFS 2020
Atmos - Legacy
The ultimate visual enhancement tool
Real-time rendering and full customization — true Rayleigh scattering, ozone, and the famous “ash cloud” fix for MSFS 2020.
MSFS 2020
Weather Force
METAR-based dynamic weather engine
Accurate, continuously evolving weather driven by real-world METAR & GFS data.
MSFS 2020
AccuSeason Advanced
Customize or automate global seasons
Geographically accurate, date-driven foliage and terrain coloring across both hemispheres — set it and forget it.
MSFS 2020
Real Global Airport Textures
Photo-based global PBR replacement
Over 1 GB of photo-real, FPS-friendly PBR surfaces across 37,000+ airports worldwide.
From the community
Trusted by pilots worldwide
★★★★★
“There are currently no other environmental products on the market which even come close.”
PW
Philip WilsonMSFS Pilot
★★★★★
“Sometimes we know it simply from the moment we experience it. That's when you've done something right.”
SW
Sales WickMSFS Pilot
★★★★★
“This is a truly unique product that not only brings beautiful details to your flying environment — it transforms it.”
WF
Willie FieldsMSFS Pilot
★★★★★
“I bought REX several days ago. It truly has changed my flight sim experience — they did it right.”
WV
William VickMSFS Pilot
★★★★★
“REX has transformed my experience. The realism of the cloud formations has to be seen to be believed.”
CD
Christopher DuncanMSFS Pilot
FAQ
Good to know
Who is REX Simulations?
REX Simulations is a division of REX Game Studios, specializing in developing high-quality add-ons and enhancements for flight simulation software since 2006, focusing particularly on weather generators, textures, and environmental effects.
What are the latest products offered by REX Simulations?
Atmos CORE, Atmos - Legacy, AccuSeason Advanced, Weather Force, Real Global Airport Textures, all of which are compatible with Microsoft Flight Simulator.
How does REX Simulations' weather engine differ from default weather system?
REX Simulations' weather engine, Weather Force, offers more advanced weather modeling and real-time weather updates compared to the default weather system, and aim to provide more accurate and dynamic weather conditions.
Can REX Simulations' products improve performance and realism simultaneously?
Yes, REX Simulations' products are designed not only to enhance visual realism but also to optimize performance where possible. Features like dynamic weather effects and texture enhancements aim to balance realism with performance considerations.
Are REX Simulations' products compatible with third-party add-ons?
REX Simulations products are generally compatible with other third-party add-ons, but specific compatibility can vary. It's recommended to check product descriptions and forums for user feedback on compatibility with specific add-ons.