In order for you to play Jagged Alliance Flashback on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 13.04
Processor (CPU):
Intel Core i3 or AMD equivalent
Memory (RAM):
4 GB RAM
Graphics Card:
Intel 4400 / AMD HD 6670
Storage:
5 GB available space
In order to play Jagged Alliance Flashback on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 13.04
Processor (CPU):
Intel i5 or AMD equivalent
Memory (RAM):
8 GB RAM
Graphics Card:
Nvidia GeForce 600 series or AMD equivalent
Storage:
5 GB available space