In order for you to play The Bard's Tale IV: Director's Cut on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 18.04 or equivalent
Processor (CPU):
Intel Core i5-2500K or equivalent
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GTX 760 or Radeon HD 7970
Storage:
43 GB available space
In order to play The Bard's Tale IV: Director's Cut on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 18.04 or equivalent
Processor (CPU):
Intel i5-4590 equivalent or greater
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GTX 760 or Radeon HD 7970
Storage:
43 GB available space