Allot of the explorable planets feel a little familiar due to restricted detail, but overall this game takes a good 76 hours to play through and do about 90% of everything. More if you want all of the achievements.
However if you like a short game you can just do the plot, which greatly increases the games cinematic appeal. You won't go wrong with buying it..........
the 360 itself is another story.........................(I'm bitter mine just warped my copy of Prey)
My mum and sister both asked me what movie I was watching when they were in the room next to my game room. It really does play like a movie when you do it strictly the storyline. The conversations flow effortlessly and the NPCs don't sound scripted the whole time, you can tell that they are responding to what you say.