It's short if you blow through it. It's essentially one mission but the open world lets you go about that mission in an infinite number of ways. It's designed to me an essential teaser for the phantom pain, a game x200 times larger than ground zeroes. Still worth the money I hear I just got my copy on my lunch break, I'll be playing this as soon as I get home today
As far as infamous goes, it's supposed to be one of the biggest games in regards to hype that the ps4 will see all year. Takes place in Seattle which was modeled in the game after the actual city itself. And it's not just one power you upgrade throughout the game, there are atleast two different powers you can use at will with all kinds of upgrades for different powers. Smoke and neon were announced, but the developers have hinted at that only being the tip of the iceberg in regards to powers and size of the game. It looks amazing on YouTube, and I personally know a lot of friends of mine are finally buying a ps4 specifically because of this game. I've waited a long time for the next installment of infamous, I'm personally not sure which game I'm more excited for; mgs5 GZ or infamous second son