I got metal gear ground zeroes for xbox one for free,i made the first mission with a A rank and in 55:30 minutes,not bad
Short review
Graphics are amazing at 60fps,no frame drops,lightning and reflections are the best part of the engine,making old gen textures and geometry look amazing on next gen,rain drops are individually rendered and the rain effect is jaw dropping,only watch dogs has better effects.
Gameplay wise the game is decent,the only very shitty part is the auto-cover mechanic which is extremely unreliable,i hope that they improve it significantly or replace it with a button press or something,enemies are somewhat competent in reacting to your actions,but are very easily to confront on a one on one basis.
Plot is meh,you really need to play the previous games(mgs 3 and mgs peace walker) to understand it,despite the excellent summary and tapes explaining the whole story.
Snake's acting and voice are really good,the highlight of it is the ending cutscene,and you have a beautiful amazing intro sequence showing the full potential of the fox engine.
downside is that this should be a free demo from the beginning and i really hope they put this include in the mgs 5 box when it releases.
also another one is the 720p on xbox one,this clearly shows that they just dumped the graphics on the ddr3 instead of the esram,although the hardware upscaler does a excellent job,720p shows how shitty their port is,despite the constant frame rate and i doubt they will improve this on the final game,despite several games running a 1080p 60fps on the xbox.