I feel like if you're into gaming this isn't going to tell you much you don't already know, and if you're not into gaming, you're probably going to find it boring and too scattershot to really get much information out of.
It jumps around so much- that's my main criticism. It bounces from one topic to the next with very little by way of segues or any sense of flow, and it's remarkably frustrating. It might be forgivable if more of the individual stories were interesting, because while some are decent, other segments are really boring.
While I appreciate the effort at presenting a somewhat global look at gaming throughout the world, maybe the broad focus was what led to it being so all over the place, unfocused, and ultimately unsatisfying. It could have just been too ambitious, and I think this particular type of documentary approach is far more suited to a miniseries, rather than a 90-something minute long documentary.