Spike0503 on 13 May 2015
I would say X:COM Enemy Within if it wasn't for the fact that the ending disappointed me so much.
My choice would have to be Splinter Cell: Blacklist. It is an exquisitely made stealth game that felt fresh, polished and filled with a lot of content. I would not use "masterpiece" to describe it since that for me is a 10/10, but I only have like two of those in my entire collection, so I had to leave that out.
