In order for you to play Railway Empire on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 16.04.3 LTS + SteamOS (latest)
Processor (CPU):
Intel Core i5 750 @ 2.6 GHz or AMD Phenom II X4 @ 3.2 GHz
Memory (RAM):
4 GB RAM
Graphics Card:
nVidia GeForce GTX460 or AMD Radeon HD5870 (1024MB VRAM with Shader Model 5.0)
Storage:
7 GB available space
Sound Card:
DirectX Compatible Sound Card with latest drivers
In order to play Railway Empire on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 16.04.3 LTS + SteamOS (latest)
Processor (CPU):
Intel Core i5 2400s @ 2.5 GHz or AMD FX 4100 @ 3.6
Memory (RAM):
4 GB RAM
Graphics Card:
nVidia GeForce GTX 680 or AMD Radeon HD7970 or better (2048MB VRAM or more, with Shader Model 5.0)
Storage:
7 GB available space
Sound Card:
DirectX Compatible Sound Card with latest drivers