In order for you to play Press X to Not Die on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu or equivalent
Processor (CPU):
Dual Core
Memory (RAM):
1 GB RAM
Graphics Card:
800x600 or higher, OpenGL 3.0+
Storage:
3 GB available space
In order to play Press X to Not Die on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 16.04.3+ or equivalent
Processor (CPU):
Quad Core
Memory (RAM):
2 GB RAM
Graphics Card:
1920x1080, OpenGL 3.0+
Storage:
4 GB available space