User blog comment:JakePT/Mass Effect 3 to be Revealed at VGA Awards?/@comment-3101247-20101122140510/@comment-737801-20101125005819

Small problem with times. Your Reach theory: Halo: Reach does not last for 2 days but it lasts for over a month acutally. It starts on July 24, 2552 and ends on August 30, 2552. Now by my math that's 37 days give or take a few hours. Also ODST does not last for 6 hours, it in fact covers more than a day. Granted it jumps around, but the gameplay covers about 30 hours in real time. If you are talking about gameplay time, then that's a different story, but those are the times which can be easliy accessed on Halopedia.

But back to the other things, yes if they do it right, a game can cover just a day of combat, but as far as we know about the Blitz, it was one battle that went on for several hours. Now to really make that a game, you would have to jump all over the planet, like ODST did with the flashbacks, but even then, you would have to do it very carefully because of the canon conflicts with the Ruthless and War Hero psych profiles. However this would be stretching what you could put into a game.