Can I play ARK: Survival Evolved on my MacBook Air?
No, according to http://www.survival-evolved.com/ark-guides/survival-evolved-system-requirements.html


  Mac OS X
  MINIMUM:
  
  • OS: OSX 10.9 or Higher
  • Processor: 2 GHz Equivalent CPU
  • Memory: 4000 MB RAM
  • Graphics: OpenGL 3 Compatible GPU with 1GB Video RAM
  • Hard Drive: 20000 MB available space  


Your machine is under-spec on CPU &amp; GPU &amp; OS requirement.