Rain 18
Since 2005, REX Simulations has been building weather engines, environment enhancements, and texture products that have helped define the flight simulation experience across FS9, FSX, Prepar3D, X-Plane, and Microsoft Flight Simulator.

2005–2010

Foundations in Weather & Environment

– Weather Maker for FS9
– Real Environment Pro (Freeware)
– Real Environment Xtreme for FSX
– REX for FS9 & REX Essential for FSX
– Essential + OverDrive (Free Update)

2011–2015

Textures, Clouds & Utilities

– REX Essential + OverDrive for Prepar3D
– Latitude for FSX
– Texture Direct
– Soft Clouds
– WX Advantage Radar & Weather Architect

2016–2020

Next-Gen Visuals & Weather

– Worldwide Airports HD
– REX4 Enhanced Editions (Free Update)
– Sky Force 3D
– Environment Force

Rain 18 < 99% UPDATED >

ATMOSPHERICS

WEATHER

AIRPORTS

SEASONS

Rain 18 < 99% UPDATED >

• Real-time control of atmospherics, clouds, & lighting
• Seamless integration with live & preset weather
• Fully customizable & shareable presets
• Zero performance impact during flight simulation

Elevating atmospheric realism beyond default!

Rain 18 < 99% UPDATED >

• Real-time control of atmospherics, clouds, & lighting
• Seamless integration with live & preset weather
• Fully customizable & shareable presets
• Zero performance impact during flight simulation

The Ultimate Visual Enhancement Tool

Rain 18 < 99% UPDATED >

• Dynamic Seasons
• Customizable Options
• Automated Updates
• Global Coverage

Customize or Dynamically Automate Your Global Seasons

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• Real-Time Weather
• Accurate Injection
• Dynamic Weather Presets
• Detailed Effects

Metar-Based Dynamic Real-Time Weather Engine

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• HD Textures
• Global Reach
• Realistic Surfaces
• Weather Integration

Photo-Based, Global PBR Airport Texture Replacement

The first drop hit my wrist. Then my cheek. Then the crown of my head.

The rain hit my face. It was cold. It was loud. And for just a moment, I was eighteen again. I didn't know what was going to happen tomorrow. I didn't have a plan. I was just a collection of atoms, enjoying a storm.

After that night, I stopped worrying about ambition. I stopped worrying about the "right" path. I realized that eighteen is not the beginning of your life—it is the end of your prologue. The rain washed away the false scaffolding of high school hierarchies, the anxiety of college applications, the desperate need to be impressive.

At eighteen, you are still porous. You haven't yet built the calluses of adulthood. When the rain hits your skin at that age, it doesn't just get you wet; it gets into you. It becomes a character in your story. It was the rain that ruined your first road trip. It was the rain that soaked through your graduation gown, making the cheap polyester stick to your arms like a second skin. It was the rain that fell the night you said goodbye to your best friend, knowing you would never really be kids again.

Rain 18 < 99% UPDATED >

The first drop hit my wrist. Then my cheek. Then the crown of my head.

The rain hit my face. It was cold. It was loud. And for just a moment, I was eighteen again. I didn't know what was going to happen tomorrow. I didn't have a plan. I was just a collection of atoms, enjoying a storm.

After that night, I stopped worrying about ambition. I stopped worrying about the "right" path. I realized that eighteen is not the beginning of your life—it is the end of your prologue. The rain washed away the false scaffolding of high school hierarchies, the anxiety of college applications, the desperate need to be impressive.

At eighteen, you are still porous. You haven't yet built the calluses of adulthood. When the rain hits your skin at that age, it doesn't just get you wet; it gets into you. It becomes a character in your story. It was the rain that ruined your first road trip. It was the rain that soaked through your graduation gown, making the cheap polyester stick to your arms like a second skin. It was the rain that fell the night you said goodbye to your best friend, knowing you would never really be kids again.