In order for you to play Roguebook on Linux with minimal graphics settings, your computer must meet the following requirements
Processor (CPU):
Intel Core i5-650 | AMD Phenom II X4 965
Memory (RAM):
6 GB RAM
Graphics Card:
Nvidia GeForce GTX 650, 1 GB | AMD Radeon HD HD 6950, 2 GB
Network:
Broadband Internet connection
Storage:
4 GB available space
In order to play Roguebook on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Processor (CPU):
Intel Core i5-2300 | AMD FX-6300
Memory (RAM):
8 GB RAM
Graphics Card:
Nvidia GeForce GTX 660, 2 GB | AMD Radeon HD 7970, 3 GB
Storage:
4 GB available space