In order to play Monochroma on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 12.04 or later
Processor (CPU):
Core 2 Duo 2GHz or better
Memory (RAM):
4 GB RAM
Graphics Card:
Shader Model 3.0 Support, 512 MB Video Card or better
Storage:
5 GB available space