In order for you to play Slime Rancher on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 12.04+ or equivalent
Processor (CPU):
2.2GHz Dual Core
Memory (RAM):
4 GB RAM
Graphics Card:
OpenGL 3.2 compatible, 512 MB VRAM
Storage:
1 GB available space
Sound Card:
ALSA compatible