Computer & Video Games

hi. my imac is utterly out of memory. i wish to fool around a little mechanism games though there is no rooom for them. we paid for a 500 Gigabyte outmost tough expostulate for my computer. Is there a waay to instal, play, as well as save my diversion to this outmost tough expostulate so my mechanism wouldnt need to make use of any mental recall though a outmost tough expostulate will?? THANK YOU SO MUCH FOR YOUR HELP!!!!!!!!!!!!!!!

I have the good thought for the video diversion though have small or no knowledge in programming or computers. How would we go about being the video diversion writer, similar to the screenplay writer? Is there the certian fromat which it would have to be created in for acquiescence to an tangible designer?