Were you actually IN the video game, or was it like...watching it vividly on a 3D big screen? If you went from SP to this, it could have been really vivid hypnagogic imagery. Or it could have been a dream...but usually if you are conscious at this point you would enter a lucid dream, and it seems like you entered a non-lucid dream...which makes me wonder if the video game was HI. Either way I guess it doesn't make a whole lot of difference. You need to remember to practice doing Reality Checks...this is often the difference between gaining true lucidity and slipping into a semi-lucid or non-lucid dream. Also, you might want to sleep with your blinds open more often, as the sunlight could be a helpful way for you to have an unintentional WILD in the morning if it wakes you up.