In order for you to play Realpolitiks II on Linux with minimal graphics settings, your computer must meet the following requirements
Processor (CPU):
3.2 GHz Dual Core Processor
Memory (RAM):
8 GB RAM
Graphics Card:
GeForce GTX 760, Radeon HD 7950 or equivalent with 2 GB of video RAM. A dedicated video card is required.
Storage:
14 GB available space