In order for you to play Ken Follett's The Pillars of the Earth on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 14.04 or newer
Processor (CPU):
2.8 Ghz Dual Core CPU
Memory (RAM):
4 GB RAM
Graphics Card:
AMD Radeon HD 6670, GeForce GTX 200 series with at least 1GB and proprietary drivers, latest OpenGL driver
Storage:
13500 MB available space
Sound Card:
Sound Card with latest drivers
In order to play Ken Follett's The Pillars of the Earth on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 16.04
Processor (CPU):
Quad Core CPU
Memory (RAM):
4 GB RAM
Graphics Card:
AMD R7 200 series, GeForce GTX 500 series with at least 1GB and proprietary drivers, latest OpenGL driver
Storage:
13500 MB available space
Sound Card:
Sound Card with latest drivers