ok I built a pc and I am still using integrated graphics on it soon I will get a gpu but anyway I am using the OS Ubuntu 16.04 (Linux) and I tried some low demanding steam titles like unturned and ghost phantom recon but the games do not boot someone plz help me with my issue

and my specs are core 2 duo 4 gb ram 80 gb hard drive and integrated intel graphics

 

Check your system logs to see if there is any useful diagnostic information there.