In order for you to play Colossal Cave on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 16.04 (64bit)
Processor (CPU):
Intel Core i3 @2.9 GHz or AMD equivalent / Intel Core i5
Memory (RAM):
8 GB RAM
Graphics Card:
For Oculus headsets it’s recommended to remain in the Oculus OpenXR runtime. Also note, Colossal Cave currently does not support some pre-2019 controllers (especially older Vive controllers [and a few older Windows headsets] with limited buttons).
Storage:
8 GB available space