Yes there are more game sales during Q4 than any other time of the year, but not enough to support 30+ games, most of those Q4 sales come from the biggest annualized series like CoD, Assassin's Creed, Madden, FIFA, etc., as well as any other big AAA games that release during that time, smaller AAA games and AA games that release in Q4 often suffer due to the competition they're up against, I've seen it time and again. Publishers would be much better off releasing thouse smaller games in Q3 when there's less competition, and then doing their first price drop during Q4 to attract Holiday purchasers. As for Halo 3 vs Halo 4, I'd say that the fact that Halo 4 is tracking ahead of Halo 3 has more to do with the 360's larger install base size by the time of Halo 4's release than it has to do with their respective release windows. 

Heck, I just realized that The Crew's delay means Ubisoft will be releasing 4, possibly 5 AAA games in Q4, why would they send that many of their games in to compete against each other like that? 

Some great games on Project Spark Beta, just watched them play a side scroller as a bunny in black and white, somebody made a Cyclops enemy, somebody made a full Halo Hud, it had the hud parts where you can see the helmet armour, with a minimap and a working assault rifle (not skinned though, they should really add some skins for items for you can reskin guns if you make them) and working plasma grenades (idk if they stuck though)

There was a total wipeout type game that looked pretty fun too except you play as a ball Lol

Now one where you can slow down time Lol

Yeah I did. I sent it to like 14 people. Including Dynosaw.

Me no get :(