Board Thread:General Discussion/@comment-149.12.7.137-20140118111345/@comment-5085906-20140121094258

It's going to take 5-6 (if not more) hours of gameplay, and pay attention to how I said "gameplay" meaning most of those hours will be YOU playing a GAME, not YOU watching a shitload of cutscenes in it. Plus, not counting the huge replay value which comes with a huge variety of different approaches in this amazing open-world setting. So yeah, I wouldn't really worry about the length.

Also, what story progress? As Soul reaper said, we already know what the GZ port is going to give us in terms of story - Snake rescuing Chico and then moving to Motherbase where he has to fight to against an unknown enemy, where he also falls into a nine years coma.