In order for you to play Gibbous - A Cthulhu Adventure on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 12.04+
Processor (CPU):
2,5 GHz Intel Core i3 or AMD Athlon
Memory (RAM):
4 GB RAM
Graphics Card:
Dedicated video graphics card with 2GB of memory
Storage:
20 GB available space
In order to play Gibbous - A Cthulhu Adventure on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 18+
Processor (CPU):
Intel Core i5-3470, 3.20GHz or AMD FX-6300, 3.5Ghz
Memory (RAM):
8 GB RAM
Graphics Card:
nVIDIA GeForce GTX 660, 2 GB or AMD Radeon HD 7870, 2 GB
Storage:
20 GB available space