In order for you to play Train Valley 2 on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 12.04+ or SteamOS+
Processor (CPU):
2.2 GHz CPU
Memory (RAM):
2 GB RAM
Graphics Card:
ATI Radeon HD 2400 or NVIDIA GeForce 7600
Storage:
1 GB available space