In order for you to play Desperados III on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 16.04+
Processor (CPU):
3.5 Ghz Dual Core
Memory (RAM):
8 GB RAM
Graphics Card:
Nvidia GTX 560 / Radeon HD 5850, 2 GB
Storage:
21 GB available space
In order to play Desperados III on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 20.04
Processor (CPU):
3.5 Ghz Quad Core
Memory (RAM):
12 GB RAM
Graphics Card:
Nvidia GTX 760, AMD Radeon HD 7870, 3 GB
Storage:
21 GB available space