REX Environment Force is the First Realtime On The Fly Dynamic Living Environment Utility

On the fly dynamic living environment and atmospheric utility

Includes live cloud and sky texture sync technology and our new real-time advanced shader processor and in-sim interface for live tweaking and saving capabilities.


Real-Time Environment Simulation Automation and Tweaking Flexibility.

Enjoy instant, on the fly visual feedback, whether you are tweaking the sim to your liking or allowing Environment Force to automatically adjust the environment for you... all while the simulator is running.

  • A convenient and powerful in-sim shader tweaking utility is also provided with the ability to save your creations
  • You can even use your other shader tools without the need to re-open your sim, as Environment Force recompiles shaders on the fly
  • User-controlled cloud formation and dissipation control, cloud coloring, visibility and fog control, scene and cloud lighting, terrain shading, water appearance control, water and terrain coloring, 3D clouds / cirrus clouds / sky texture sync
Environment Force Realtime Changes
  • Witness weather smoothly change over time
  • The world changes its atmospheric and terrain properties depending on weather
  • Automatic cloud morphing, scene and cloud lighting, environment shading, water control, 3D clouds / cirrus clouds / sky texture sync

New, Non-Destructive API

The API works on the simulator run time layer and does not change any of the core framework of the simulation.

Choose to control or automate

With Environment Force, you can now control the key weather and environment features in real-time, such as: Cloud morphing, sky and cloud coloring, sky and cloud texture swapping, visibility, water coloring and shader control, terrain and object coloring, and cloud / water / terrain / object / scene lighting. Or you can simply set it and forget it, with the WX-influenced smoothing controls for all weather parameters AND weather engines.

Breaking the Paradigm

Accomplish a living environment controlled in real-time, on-the-fly giving instant visual feedback.

3D Cloud Morphing
Texture Sync
Manual Lighting
Water Controls
Environment Coloring
Realtime or Manual Cloud Texture Sync
Realtime or Manual Sky Texture Sync
Cirrus Cloud Morphing

Different Modes of Operation

You can enjoy tweak-free operation known as Automation Mode. This mode allows Environment Force to automatically control and change key environment visuals on the fly, in real-time as dictated by real-world weather. Or adjust visual settings in real-time within the simulator via the in-sim mini UI modal window. Manual Mode will allow you to take control of key environment elements and shape your environment to your liking. Adjust more visual settings in real-time within the sim via the in-sim mini UI modal window.

  • Automatic or manual cloud manipulation and morphing
  • Automatic or manual cloud morphing
  • Automatic or manual cloud coloring
  • Manual visibility and fog control
  • Automatic or manual scene lighting
  • Automatic or manual cloud lighting
  • Automatic or manual environment shading control
Environment Force Realtime Changes
  • Automatic or manual water appearance control
  • Automatic or manual environment coloring control
  • Automatic or manual water and terrain coloring control
  • Automatic or manual 3D cloud texture sync
  • Automatic or manual cirrus cloud texture sync
  • Automatic or manual sky texture sync
  • Community-based cloud server to upload and share presets
REX Clouds Changing in Realtime

Cloud Component

When using a real-time weather engine, this component provides more accurate properties to clouds as they dynamically transition on the fly.

Live Mode Automation

You can enjoy tweak-free operation known as Automation Mode. Customize to your liking.

Aircraft Yoke Over Environment Force UI
Texture Synchronization

Live, On The Fly Sky and Cloud Texture Sync

Load cloud and sky textures live on the fly or allow full automation dynamics. Requires Sky Force or Texture Direct. We are currently working on an API for use with other texture add-ons. If you are a content creator and would like to interface with Environment Force, contact us!
Smooth Weather System Transitions

With Environment Force you will be able to experience smooth weather system transitions with ALL weather engines as clouds and weather will smoothly transition in and out over time.

Tight Integration With REX Sky Force 3D

The Environment Force API integrates with REX Sky Force 3D. If you have Sky Force, Environment Force will utilize its weather features for the ultimate in smooth weather and visuals.

Environment and Weather Synchronization

With the power of two components from the Environment Force API, the environment will transition and respond to weather conditions live, on the fly. If the conditions become stormy, clouds change in structure as well as terrain coloring, sky colors, and water functions change in unison. In short, the flight simulator experience is no longer static... it lives!

Simconnect Independence and the Future

One of the major benefits of our new Environment Force API is that it’s COMPLETELY independent of the often flawed Simconnect platform. Our new Environment Force API not only offers great performance, it also allows us to continually advance and broaden the API for future features.

Friendly and Easy to Use

Enjoy a friendly and easy to use, feature-packed application user interface.

Environment Force UI

Watch the Time-Lapse Now!

Capability time-lapse of our new real-time dynamic living environment, weather & visibility smoothing and cloud life cycles. More videos to come exhibiting our real-time on-the-fly advanced shader processor.

What Environment Force IS

A utility with the deepest control for shaders and full dynamic living environment automation on the market. Thoroughly tested with new practices and procedures. An FS tuners paradise. Compatible with ALL payware and freeware add-ons (including Sky Force 3D, Active Sky, PTA, and Tomatoshade). Designed around performance. Compatible with Prepar3D V4.4 and V4.5. More compatibility in the future.

What Environment Force IS NOT

Environment Force does not contain any textures. It does not contain a weather engine, rather it works in tandem with a weather generator to provide a more realistic dynamic living environment, complete with smooth automated functions to change atmospheric conditions on-the-fly. Environment Force is not a replacement for Sky Force 3D. Environment Force is not available for FSX, FSX Steam and Prepar3D v.1 - v3.

Frequently Asked Questions

In this section we will try to answer the most frequent questions.

Environment Force does not replace any other programs, it is a one-of-a-kind product unlike anything currently on the market, and works on another layer outside of the sim, in a non-intrusive manner.

No, Environment Force is not a weather engine, more like a dynamic living environment engine with cloud and weather life cycles. With added real-time, on-the-fly shader enhancement capabilities, allowing you to save, name and share with other FS users.

Environment Force is compatible with every add-on currently on the market.

Because it works on another layer outside of the simulator, the impact is negligible.

You can allow Environment Force to do all the work for you with its Automation Mode. We allow you to fine-tune anything at anytime via our non-obtrusive Mini-UI accessible from within the Simulator.

There is no need to run any other REX software to benefit, as the programs will speak to each other without the need to open them.

Price will be revealed on day of release, which is April 30th, 2019.

Environment Force allows full, real-time on-the-fly visual feedback. Plus the ability to save, and instantly inject any saved preset instantly while you fly, with zero lag. You can still use other shader tools.

Sky Force 3D users will receive a discount if purchasing Environment Force from the same store as you purchased Sky Force. We will be setting up bundling options as well.

Environment Force Community Preset Sharing

Built-In Community Preset Sharing

On the fly preset sharing allows you to quickly get setup with your favorite tweaks from your friends or content creators. Select a preset while the sim is open, click INJECT and voila!

Environmental Life Technology

Currently the weather and environment remain static, even with real-time weather engines. Environment Force now gives life to a stagnant experience, as the sky and clouds now morph and smoothly transition over time and are always changing in density, size and atmospheric coloring... all in real-time.

You can now experience a full overcast cirrus cloud deck, something that cannot be accomplished without Environment Force!

REX Livery

Plays Well With Others

Compatible with all weather engines, texture/graphics and shader add-ons out of the box.

EF Shaders in Action
REX Environment Force User Manual

Environment Force User Manual

Download the user manual today and discover how Environment Force can change your in-flight experience!

REX Auto Update

Built-In Auto Update

The built-in auto update technology allows REX Simulations to quickly, effectively and effortlessly deliver updates to our customers.