A realistic space opera for PC.

Explore the vast emptiness of space. Take command of your ships, create your empire.
Helium Rain is a realistic space simulation game.

  • Fly any ship of your fleet, including fighters, freighters or capital ships.
  • Do as you please, whether you want to become a wealthy merchant or a fierce pilot.
  • Customize your ship, change your equipment, buy new gear.

Hard Sci-fi

We want to build a world that feels real. Your ships have generators, radiators, weapons, engines, cargo bays or life support systems - they all work together. Every thruster on your ship plays a role. Aim for engines to pin down your enemies, or send them spinning around by destroying power stations. Most of our ships have more than thirty individual parts !

One planet, many enemies

The massive gas giant Nema is your new home. The planet is a near-infinite source of fuel, her orbits a swarm of asteroids, her irradiated moons a silent threat. Helium Rain gives you an empire to build, but you will need to claim it for yourself, and defend it against your competitors. It's up to you to decide if you will trade resources, start wars, or just avoid trouble.


You can customize the most important parts of your ships - your main engines, attitude control thrusters and weapons. You can choose your colors, and of course, you can fly every ship in the game.

PC graphics

Helium Rain is built with Unreal Engine 4 and targets the most powerful gaming rigs. The game will ship with support for 4K rendering, supersampling, high-quality shading and post-processing effects.

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Hello !

It's been a very long road - more than three years in the making - but we are finally there : Helium Rain is now available ! You can grab the game on Steam today, DRM-free. This is an Early Access release, so it will get better with your feedback, as we explained a few weeks ago. We are already fixing bugs and implementing player suggestions !

A realistic space sim

Helium Rain is a spaceflight simulation geared toward trading, economy, and combat. The most important concept is how dynamic the world is. Want to attack a freighter ? The wares it transports will now be costlier, its owner will hate you, and other factions will divert transports to take its place unless you do it first.

We've been doing our best to give the game a unique feeling, and we thought it would be best to make the game more realistic than usual. The flight model is fully Newtonian with six degrees of freedom, the combat features real-life gun shells that can bounce on surfaces or penetrate targets, the economy is finely detailed.

It all started in 2014...

The project started early 2014, with the then-all-new Unreal Engine 4. Here is a shot from the very early stages of development !

Since that, hundreds of art assets were created, tens of thousands of lines were added to the C++ code, hundreds of have been resolved...

Of course everything is very different now. Three years of constant refinement go a long way ! We're very happy with how the game looks today (check our trailer on the Steam page to see a bit more).

More is coming

Last year, we were able to succeed through Steam Greenlight with your help. While Greenlight is now being retired, this is how we made our way onto Steam. We're going to keep working with the community now that we are in Early Access.

Some of the features that are coming include :

  • a new fuel usage system ;
  • different travel speeds based on engines ;
  • a story ;
  • better joystick and gamepad support ;
  • modding support, if we can do it !

Thanks for reading !

Helium Rain to enter Early Access on August 18

Helium Rain to enter Early Access on August 18

News 4 comments

After more than three years in development, we're ready to release the game !

Helium Rain - March 2017

Helium Rain - March 2017


New quest system, weapon, stations, ship, and Unreal Engine version - Helium Rain is nearing completion !

Help us design our next ship !

Help us design our next ship !

News 2 comments

Our largest ship yet is being designed, and we want your input. Which model would you like us to create ?

Helium Rain combat gameplay

Helium Rain combat gameplay


Helium Rain's combat system is now finished ! We're moving on to implementing quests, exploration, and technology progress.


Looks cool, and there are some interesting ship designs too. I'll definitely be keeping track of this.

Reply Good karma Bad karma+3 votes

will this be online?

Reply Good karma Bad karma+3 votes
VoidStranger Creator

No, this is a 100% single-player game.

Reply Good karma+4 votes

Excellent news, of being Singleplayer!!

Reply Good karma Bad karma+2 votes

That sounds good to me. I'm a little frustrated and tired of when searching for games, something around 70-80% of what I'd otherwise be tempted to look at are MMO-somethings....

Reply Good karma Bad karma+3 votes
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Helium Rain
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Deimos Games
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Single Player

Latest tweets from @heliumrain

This month's update will bring many improvements to combat in #HeliumRain - better missiles, AI, capital ship contr… T.co

Jan 8 2018

RT @gamingonlinux: An interview with the developer of space sim Helium Rain who says ‘Linux gaming is alive and well’… T.co

Jan 3 2018

See all pictures of our new Dragon on ArtStation, including some behind-the-scenes ! Artstation.com #indiedev with #UE4

Dec 30 2017

The next #HeliumRain update will bring the all new Skirmish game mode, and many battle-related fixes and upgrades.… T.co

Dec 30 2017

RT @linuxgamecons: #HeliumRain when to expect the release in 2018 - #Linux, Windows #gamingLinuxgameconsortium.com T.co

Dec 29 2017

#MerryChristmas to all of you !

Dec 24 2017

#HeliumRain is on sale in the #SteamWinterSale ! Get it now at 30% off and enjoy our realistic spaceflight sandbox ! #indiedev with #UE4

Dec 21 2017

RT @MrMisterSwift: If any of you reading this enjoyed X³:TC and X³:AP, I highly recommend checking out Helium Rain on Steam. It's the… T.co

Dec 2 2017

New #HeliumRain patch released on @steam_games ! Store.steampowered.com #indiedev with #UE4

Dec 2 2017

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