We've released a hotfix for Helium Rain today. As for 1.3.1, this update targets a specific issue.

• Fixed notifications at the end of a complex upgrade that would cause crashes

• 12 playable ships with weapon and engine upgrades
  Play fighters, bombers, cargos, corvettes or capital ships.
  
• Realistic economy model
  Take advantage of an accurate simulation of space trade to be the most competitive company. If diplomacy fails, blockades are in order.
  
• Fast-paced combat with a Newtonian flight model
  There is no speed limit in Helium Rain. You can fly at half a mile a second while aiming backwards !
  
• Localized damage model for spacecrafts
  Aim for critical systems in order to disable ships, kill their crew or capture targets.
  
• Procedural contracts, world exploration, technology upgrades
  Pick contracts and build your empire.

• OS: Ubuntu 16.04
• Processor: Intel Core i3Memory: 4000 MB RAM
• Memory: 4000 MB RAM
• Graphics: NVIDIA GeForce GTX 470 / DX10 compatible GPU with at least 1GB VRAM
• Storage: 5000 MB available spaceAdditional Notes: Only 64 bits versions of Linux are supported. Check the Linux support thread in the forums !

• OS: Ubuntu 17.10
• Processor: Intel Core i7Memory: 8000 MB RAM
• Memory: 8000 MB RAM
• Graphics: NVIDIA GeForce GTX 970
• Storage: 5000 MB available spaceAdditional Notes: Only 64 bits versions of Linux are supported. Check the Linux support thread in the forums !