good work!

however.. according to this picture there's a couple of inconsistencies
http://upload.wikimedia.org/wikipedia/commons/8/8a/Nintendo_entertainment_system.jpeg

I'm sure you'll notice them yourself, but here goes. The front of the nes should be flat. the red light is on the wrong side. controller ports are missing (maybe u left them out because it would be very hard to read at such small pixelcount). the groove on the top is the wrong way (or atleast that's what it looks like on my monitor). there's barely noticable space between cartridge-lid and the black stripe, you have too much space.

other than that.. AMAZING! I wuw nes!

ever played Abuse? That game handles mouse aiming perfectly. However, the graphics are nothing close in what ur trying to bring forth.

nice... it's Ultra Magnus! or perhaps not Optimus Prime tis his name 
I like the coloring, but I also don't like it 
Perhaps you could add some hint that he's made out of metal?

i like the dead guy lying to the far right

nice piece. the left leg on the character are somewhat short, no? Or it's too think or misplaced... make some adjustments to it atleast (compare to his body and mostly noticable compared to the right leg )
maybe the character is born like that? with problematic body atonomy. You also need to adjust his left arm reminds me of Scary Movie 2 of the butlers ugly fingers haha
Somehow I don't like the end of the flame the dragon breathes. Some adjustments to that also, perhap;s.Also fix the lighting as the others have written.

Other than that! awesome piece!