REX for FS9/FS2004

Real Environment Xtreme is a fifteen-time award-winning, photo-realistic, hi-definition professional graphics package, weather engine & flight planner for Flight Simulator X, Flight Simulator 9 (FS2004), PREPAR3D and X-Plane 9.

REX FOR FS9 (FS2004)

An ultra-realistic breakthrough in simulation analysis, comprising a vast assortment of NEW graphical content based on PHOTO-REALISTIC elements.

Combined with our NEW Weather Engine & Flight Planner, Real Environment Xtreme will enhance your complete sky, water, airport, lighting and weather environment.

With over three years of research and development, Real Environment Xtreme™ has become the benchmark utility for the discerned flight simulator pilot. Version 2 of REX offers a wealth of new features and advances in technology ranging from our state-of-the-art weather engine to textural enhancements.

Real Environment Xtreme™ allows you to control environment, water and airport textures, as well as lighting effects that are so critical to the enjoyment and immersion within the flight simulator experience. All of these features may be fully manipulated to your individual tastes.

  • Industrial strength weather engine
  • Random weather generator
  • Accelerated texture installation process. Added ability to reduce install time with a click of a button
  • Hi-definition, ultra-realistic 3D clouds and realistic rendering of cirrus clouds as seen in the real world
  • Sky color environments, including smoothing horizon transition & visibility smoothing for dawn, day, dusk & night textures
  • Convincingly real water environments with tropical reef simulation (end user color controllable, including tropical with reef simulations, inland and ocean, wave turbulence/frequency, environment variants & coloring
  • Airport environments (photo-real asphalt & concrete runway textures, new runway and ground bump-mapping, asphalt taxiways, concrete taxiways, realistic taxiway markings, airport signage, airport parking and general photorealistic airport ground scenery)
  • Multiple variations of sun, lens flare & lightning bolt algorithms, which creates a visually stunning array of lightning situations
  • Fully integrated to select sky, cloud, water, airport, and effect themes based upon weather situation, season, and other synoptic, mesoscale, and micro weather conditions
  • Enhanced Cloud Simulation to give a more 3D volumetric feel to cloud structures and the atmosphere
  • Lighting environments (runway lighting including simulated ground glow, stunningly realistic aircraft spotlights with variations for small to large aircraft, aircraft strobe lights, variations for add-on aircraft as well)
  • 3d cloud & water resolution options for performance preference
  • Flexibility to work in tandem with other vendor weather & texture packages
  • User-friendly intuitive and visually pleasing interface

"Fine product for a fine price. REX for FS2004 may potentially change your flightsimming experience forever. As one who has been continually tweaking FS2004 since the early days when it first came out, and trying to get the old classic sim to be as close as possible to a real-life flight experience, REX certainly came as a welcoming surprise and have taken my FS2004 to new levels. This package comes bundled with loads of textures that the user can customize to his or her heart's desire. It comes with new sky colors, water textures and waves, airport environments such as taxiways and runways, runway lights and strobe lights, and perhaps most dazzling of all, high-definition clouds.

In addition to textures, this package also comes bundled with its own weather engine and flight planner. Furthermore, the developers are still improving this product, so there should be more to come in the future.

So, if you are like me who have stuck with FS2004 after all these years, I would highly recommend this product for enthusiasts who are interested in improving the visual quality of their sim. Being once a pilot who have flown in the skies in real life, I would say that this product definitely deserves its title of "real environment," for it certainly brings back the breathtaking feel of the environment several thousands of feet in the air."

Andy Yiu -5 of 5 Stars!


Weather Engine


Weather Engine Interface Samples

The FS2004 Intelligent Synoptic Weather Processor

The Intelligent Synoptic Weather Processor (ISWP) is a completely re-defined process that takes weather processes to a new level of detail. Included are the same features in relation to configuring synopic, meso, and micro weather features, but the ISWP interacts and allows the user more flexibility in setting visibility smoothing features and weather update smoothing features.

The ISWP is further expanded within our custom weather generator. Thus, if the weather is boring where you live or normally fly you can have the ISWP create a unique weather theme that covers all seasons and various level of severity at the click of a button. The ISWP looks at over 20 different weather data elements to determine the best weather conditions and influence within the Flight Simulator environment.

The ISWP influences all textures throughout REX, giving Flight Simulator an even more realistic look and feel. Now the feeling of being in an immersed weather environment goes beyond just what type of clouds are going to be in the sky.

Taking ideas from real life flight planners, we have integrated the flight planning tools along with our ISWP platform to give the user a greater flexibility to dodge severe storms that might be in your path.

With the ISWP, the weather conditions are more true to life, giving you control over weather influence ranges and maximum visibility smoothing features not only horizontally, but also vertically.

Thus, while looking at the 20 different weather elements we can give the user a greater detailed view of the weather before you fly.

"This has to be the best addon our there for clouds, water, taxiway and runway textures! Very user-friendly.."

Tristan Ridge -5 of 5 Stars!


Flight Planner


Flight Planner Interface Samples

REX provides a robust flight planner that works hand-in-hand with the weather engine.

The REX flight planner offers you the tools to plan an elaborate trip and realistic forms to print out as if you have filled out a real flight plan. Real Environment Xtreme creates an actual flight plan that is useable within Flight Simulator.

Within the REX flight planner you have the ability to the following create a flight plan. You can enter departure and destination points and let REX create basic waypoints. You can then fully modify the waypoints or add new ones. You can save and create your flight plan that works in both FS9 AND FSX. In REX you can load a flight plan created in FS9 or FSX. You can then modify it or just view it withing the new flight planner.

With the development of the ISWP, you have the ability to allow the weather to influence the textures loaded based upon your flight plan.

We have also integrated some of the WASys features into a new mapping feature, allowing you to graphically view weather along a flight path.

"Like everyone else has said, just stop thinking of getting this and get it already, they are still supporting it, and it really transforms FS9 into FSX almost, amazing attention to detail, I wish all payware addons were like this!"

John Godfrey -5 of 5 Stars!


Texture Engine


Texture Engine Interface Samples

All images were photographed by a professional photographer and pilot using a professional camera and 4"x5" film transparencies.

We do not use digital cameras as the resolution would not have sufficed.

All photographs were correctly "matched" for lighting & weather situations and put through a process known as Digital Laser Drum Scanning using a SCREEN DTS high-resolution drum scanner. All transparencies were mounted behind oil onto a drum cylinder made of specialized glass. A laser then scanned the transparency at a resolution of up to 16,000px. Film density cannot be matched by digital photography, and density is crucial for clarity and sharpness.

  • Cloud textures including cumulus, cumulo congestus, cumulonimbus, nimbo stratus, strato cumulus, cirro Cumulus, alto cumulus, cirro stratus, wispy cirrus
  • Sky textures including daytime, dawn, dusk and night
  • Create your own inland blue and inland brown water variations, as well as ocean and tropical water coral textures
  • Ocean and inland 3D wave animation rendering, ranging from calm to stormy seas
  • Airport environments including asphalt and concrete runways, asphalt and concrete taxiways, customized taxiway markings, runway markings, airport parking and surface refraction
  • Sun and lighting technology including sun, flares, lightning, landing lights, aircraft strobe lights and runwaylighting


"Fantastic product! One of the best flight simulator addons out there, Adds a whole new dimension to FS2004 and the realism improves alot! I truly reccomend this product to anybody! Overall 5/5."

Thomas Emms -5 of 5 Stars!




Within the WASys system are tools that allow you to view your weather across the world.

You might see on the radar a line of precipitation, but with the WASys tool you can see into the heart of the line of precipitation.

It might look innocent, but when you look at our storm scope guage you see it's truly a line of storms, how severe the turbulence and wind shear may be and possible hail and icing levels.

With the WASys system you will be able to look at the weather surrounding your aircraft as you fly.

Or if you want to look at your destination or alternate airport weather, you can in a flash. With the WASys you are able to get a graphical view of the weather. That way you can see what you are about to fly into. You can view precipitation levels, wind and wind shear conditions, turbulence, icing and possible areas of hail, and lightning detection. With the WASys you can also view areas that are forecasted to have severe turbulence and convective activity.

With the use of the ISWP, you are able to graphically view your flight plan and integrated key weather elements. You can now click on other areas of the map similar to many of the new online mapping features today and move to a region of weather to zoom in to see what's happening. Like many different gauges in real-world aircraft, you can view the weather conditions as you fly.

The REX Weather Engine allows the ability to receive realistic PIREPS reports within FS2004 as you fly, giving the pilot information about upcoming conditions to divert if needed.

"Firstly I want to say I do not normally write reviews about anything,because I am a cranky git....But having just installed REX into my Flight Sim I am really really happy and smiling broadly...It is like having a new sim,after the disappointment
of not being able to run FSX (due to my computer specs) REX makes up for this more than enough...Buy it! it transforms a dull sim into a "As Real As It Gets" for sure..."

John Colohan -5 of 5 Stars!


Control Panel

You can buy this product now at any of these fine online retailers.