In order for you to play Zero-K on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 13.04 or equivalent
Processor (CPU):
2.0 GHz dual core CPU with SSE (Intel Core 2 Duo or equivalent)
Memory (RAM):
4 GB RAM
Graphics Card:
512 MB graphics card with OpenGL 3 support (GeForce 8800 or equivalent)
Storage:
6 GB available space
In order to play Zero-K on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 17.10 or equivalent
Processor (CPU):
3.0 GHz quad core CPU (Intel Core i5 or equivalent)
Memory (RAM):
8 GB RAM
Graphics Card:
2048 MB graphics card with OpenGL 3 support (high GT 500 series or equivalent)
Network:
Broadband Internet connection
Storage:
8 GB available space