In order for you to play Goetia on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Steam OS 1.0, Ubuntu 16.04
Processor (CPU):
intel core 2 DUO 2GHz +, AMD Athlon TMX2 2.2GHz +
Memory (RAM):
2 GB RAM
Graphics Card:
Nvidia GeForce GT 705, AMD Radeon R7 240
Storage:
7 GB available space
In order to play Goetia on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Steam OS 1.0, Ubuntu 16.04
Processor (CPU):
intel core I5-4440, AMD FX 6300
Memory (RAM):
4 GB RAM
Graphics Card:
Nvidia GeForce GT 740, AMD Radeon R7 250
Storage:
7 GB available space