REX Essential PLUS with OverDrive


REX Essential PLUS OverDrive is a photo-realistic, hi-definition environmental weather and texture package with flight planning capabilities for FSX, FSX-Steam Edition and PREPAR3D. Includes a robust selection of beautiful user-selectable or automatically-selectable sky, cloud themes and other environment textures, real-world and custom weather generators, real-time weather reporting & updating.

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REX Game Studios is committed to maximizing the weather, planning and flight realism experienced by their flight simulator customers. With over 8 years of research and development, the REX line of products have become the benchmark utility for the discerned flight simulator pilot, offering a wealth of features and advances in technology.

New in REX Essential PLUS with OverDrive is the Weather Engine Plus mode, a second weather engine mode utilizing the weather theme process. This process injects real-time live weather, archived weather and even custom weather into FSX/P3D. The process is fast, eliminates flashing and does not affect frame rates. Synoptic and Micro weather station features are included, adding more depth to this new weather mode. Weather Engine Plus injects real weather including real winds and temperatures aloft. To sum it up, there are two modes in which to inject weather into FSX/P3D: the standard station mode or the Weather Engine Plus mode.

The new Download Center inside of REX allows REX Game StudiosĀ® to provide new FSX and Prepar3D content to its user-base in a timely manner. 

REX Game Studios has partnered with FlightAware, the leading aviation software and data services company to expand upon real-world flight planning within REX Essential PLUS with OverDrive. REX also 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.


  • TWO Newly-engineered, industrial strength weather engine modes with integrated real-world winds and temperatures aloft
  • Random weather generator
  • Weather Cubed Technology with server-side functionality, takes the processing duties off of the host computer for smoother frame rates within flight simulator environment
  • Built-In FlightAware flight planning within the new REX Flight Center. Ability to search for real-world, real-time IFR flights scheduled at a single airport or between routes between two airports. You are provided details about the flight and then able to import the flight plan into FSX or P3D via REX Essential PLUS with OverDrive
  • REX Edge Technology allows community integration such as sharing texture and flight plans with other REX users around the world. All REX users are now connected in various ways to each other, thus allowing them to share their creations with other REX users.
  • Accelerated texture installation process. Added ability to reduce install time with a click of a button.
  • New Environment Sounds! REX Essential PLUS with OverDrive now includes true environment and weather-related audio
  • Over 14GB of textures included!
  • 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. Also new realistic type of wave and reflection included in many variations for shader 1x and shader 2x INCLUDING DX10 Compatible)
  • 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

To use REX Essential PLUS with OverDrive within Prepar3D, users will be required to pay a one-time licensing fee. Purchasing this special license is only available within the REX application. To use FlightAware data within REX Essential PLUS with OverDrive, users will be required to purchase a monthly subscription. Purchasing this subscription is only available within the REX application.

For more information:


  • Windows Vista SP2 or greater 
  • Microsoft Flight Simulator X, FSX-Steam Edition, Prepar3D v.1.4, Prepar3D v2+, or Prepar3D v3+
  • RAM: 2GB or greater 
  • Hard Drive: 30GB of free space for installation
  • Video Card: 512mb DirectX9 or greater 
  • Other: Microsoft .NET Framework 4.5 (Included with installer) 
  • Internet Connection: Required only for Community Sharing and Software Updates 

No refund, credit or replacement of any kind is available for download products. It is your responsibility to transfer your purchased download products from our servers to your computer. Considering the technical nature of the internet, REX Game Studios will make every effort to resolve any issues you may have while attempting to download your products to ensure successful delivery.


"What can you say about this masterpiece of software engineering! I was very happy with REX 2+Overdrive, but this has raised the bar on quality and excellence. The developers have made giant leaps forward in providing an immersive experience within FSX. Well done to Tim Fuchs and Co! Just to recap, simply excellent! If you were not an early buyer of REX 2.0, spend a few dollars and get this addon. I just wait with baited breath as to what the future of this software will hold. Mega thanks and awesome recognition to all involved! Shame the ratings only go to GOOD, and not EXCELLENT." - Patrick Smith

"This is the best addon for FSX. I highly recommend it as the first addon that every flight simmer purchases. It covers so many concepts and these are visible every time you fly." - Clement Wu

"There is no way I would take screenshots, or make a video without REX. Excellent addon, specially with Overdrive. Fair price for all you get, can't be beat. Lots of combinations in textures to suit your taste and computer specs. If you have a good one, you can't go wrong with the high HD settings." - Johnny Rosario

"My last review for REX 2 was unable to communicate the great effects this product produces. The newer version is even better!! I would not have thought they could improve it too much but I stand corrected. Coming from tornado alley in the states it is great to be able to ask for a thunderstorm and have multiple choices from around the world!! A plane with good visibility in a thunderstorm at night has to be seen to be fully appreciated. I haven't checked out everything it offers but so far I am really impressed and can't wait to see what they come up with next. Keep up the great work REX!!" - C.W. Hardin

"One word amazing. At xmas I bought silly over the top pc. Now running 3 screen eyefinity. So decided get FSX doing some research to make it look better heard a lot about REX found it here. Great quick service. Set it up made custom set up. Took off from RAF Lossiemouth in Scotland in default FA/18 hornet in early morning sunrise. Everything set at max resolution set to 6028 x 1080 (for bezel correction). Result stunning before I even get to the sky the water looked like water but full afterburners on into cloud layer then breaking through to sunlight just stunning still got over 50 fps. This takes FSX to next level. MS might have stopped support but with add ons like this long live FSX!" - Craig Muncaster

"Well I am going to keep this short, sweet, and simple. THIS IS BY FAR THE BEST THING YOU COULD EVER DO TO YOUR FLIGHTSIM...." - Kai Prout

GOOD!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" - Oleg Generalov

"By far the best add-on software for FSX. Well worth the money." - Luke Collins

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