It's hard to know exactly what course this is, and what the instructor was thinking. The standard might be quite low, it might not be, impossible for me to say from here. Obviously these are balls, but this is pretty extreme posterisation, there is more subtlety possible and it is conceivable that when your instructor said 'getting it' he didn't mean you were there.
If I was stuck with this idea I would, [and I am a science student not an arts one, just a warning!], take photographs which were identifiably the things in question, which say something about 'video games'. I would then give them a punchy treatment which does not render them vague or hideous. I would then assemble these into a panel I think, rather than displaying them individually, to try and say something. You are doing 'graphic design' after all.