• Register

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.

Want to learn more ?

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
Post article RSS Articles

It's been more than a year since we announced our release into Early Access, and it's been more than four years since we started working on our realistic space sim. Now, the time has come for a final release on Steam, as a polished and complete game. Take a look at our new trailer first !

Helium Rain is a realistic space sim that blends trading, strategy, and realistic spaceflight action. As an empire-building singleplayer game, you control a spacefaring company that could rule an entire planetary system - if you can make it happen.


A tale of many changes

We've released no less than twenty updates since August last year, some small, some huge. We entered Early Access with a small and vague roadmap, planning on a few months of updates before a final release ; but we underestimated just how many ideas our players would have. Here are the largest changes.

  • Upgraded stations with larger models and better docking
  • Modular station complex to easily organize your production
  • New combat model with a quick-play skirmish mode
  • New economy tools, including a transaction log, company finances
  • Upgraded economy simulation
  • Meteorite interception contracts
  • Nicer graphics, UI, sound
  • Gamepad & joystick support
  • Bugfixing

In short, every aspect of the game has seen an update - all of them based on player feedback.

Orbital map

Station complex

Changes that didn't make it

While we're happy at Deimos Games with the state of the game, I have to recognize that two large planned features didn't make it to the final game - a planned storyline, and a fuel management system. Both elements were initially outlined, but were not implemented.

The first dropped feature, the story, was planned as an optional, long-term quest chain toward end-game action. We never had a clear plan on how it would have played out, but we started creating story-focused areas, and we had various ideas about new enemies that would pop up. Ultimately, we decided the work on the economy was much more needed, and larger than anticipated. The story sectors have been made a regular part of the game and can be explored for research points.

Habitat station

The second item, fuel systems, did not get nearly as much work, and was dropped when it became clear it wasn't in line with what players wanted. Fuel management would have added yet another layer of resource management, it would have created nasty situations of stranded ships, it would have made the economy less stable, and warfare would have had even great risks of breaking the game. We decided it wasn't worth the added realism.

Ice field

While it's never enjoyable to abandon elements of a project, we feel like we used our resources efficiently during Early Access. As a very small team working for many years, we decided to focus on the core of the game - an economy simulation that works well and gives agency to the player, with combat and exploration elements.

We're still here

Releasing out of Early Access, two weeks from now, will mark the end of large additional features. But we'll still be on the lookout for bugs, blocking gameplay problems, and player feedback. We're still very serious about Linux support or performance problems too. If you find an issue with the game, please do tell us about it !

In fact, we're currently working on an additional 1.1.0 update, bringing some final UI changes to improve your economy tools. A few problems with the recent Automated Fleets technology will be fixed too. Stay tuned for an update this week.


As a final word for today, I'd like to thank the community for helping us succeed with this project. We couldn't have done it without you, and we hope Helium Rain is as good as we want it to be. Have fun !

Helium Rain is now in Early Access !

Helium Rain is now in Early Access !

News 1 comment

Our realistic space sim for PC, now available on Steam, DRM-free.

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 ?

Zeus1257 - - 175 comments

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
ledernierrempart - - 521 comments

will this be online?

Reply Good karma Bad karma+2 votes
VoidStranger Creator
VoidStranger - - 19 comments

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

Reply Good karma+5 votes
Juris3D - - 304 comments

Excellent news, of being Singleplayer!!

Reply Good karma Bad karma+3 votes
GregoryTechSoft - - 26 comments

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+4 votes
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.


Latest posts from @heliumrain

Hi ! Please follow @StrangerGwenn for updates on our future games. We're cutting down on our multiple Twitter accou… T.co

Jul 24 2019

Our Helium Rain modding kit is now available, for free, with Steamworks support ! Get it today on the Epic Games St… T.co

Mar 1 2019

RT @ValiantCheese: Fired up @HeliumRain this morning with the intention of playing for 15 minutes to get a feel for it. Somehow it's 7… T.co

Jan 28 2019

RT @spacegamejunkie: Hey everyone, the amazing, AMAZING Helium Rain is now available DRM-free on GOG. Now you have no excuse not to buy… T.co

Jan 25 2019

Helium Rain is now available on GOG ! Gog.com

Jan 25 2019

Helium Rain will release on @GOGcom this Friday, January 25th ! If you haven't played our realistic space sim yet,… T.co

Jan 23 2019

Helium Rain is on sale for this end of year🎄 ! If you've been waiting to try our empire-building space sim, now's the time !

Dec 20 2018

We're live on @spacegamejunkie now ! Youtube.com #indie

Oct 23 2018

Helium Rain 1.2 with better inputs, a nicer docking HUD, and plenty of economy issues fixed ! Steamcommunity.com #indiegame on #steam

Oct 21 2018

RT @HeinyReimes: Trade your wares and eliminate the competition in a cutthroat world Try it yourself in #exploration #scifiT.co

Oct 16 2018