In order for you to play Firestone: Online Idle RPG on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 16.04+
Processor (CPU):
2.33GHz or faster x86-compatible processor, or Intel Atom™ 1.6GHz or faster processor for netbook class devices
Memory (RAM):
512 MB RAM
Storage:
420 MB available space