This said, I am a bit skeptical about the asessment of "game hotness". Of course games that are tied or close near the end exhibit significant agitation at that stage (and "boring 1st halves") from a betting standpoint.
This might sound obvious, but great games are not just about the outcome. Think of something like soccer, where few points are scored in a given match. It would be very interesting to see what the data looks like for those, as there are fewer data points.