Yeah that was tough.
As much as I love Intellivision Atari, and Colecovision I really kept it to the big major game changers that stand out in my memory.
If I had 4 more picks you would have gotten another Colecovision, Intellivision, Arcade, and Genesis game.
I didn't even put a fighting game on my list.
I suppose I could swap Mr. Do for Street fighter or Xmen Vs Street Fighter..