Thief: Deadly Shadows (2004). The third game in the series, it was not as influential on the stealth genre as the previous two. It was eye-candy though, with beautiful graphics and scenery.

GTA 5 basically the Online part.... Was so looking forward to that but.... it was just mah filled with idiots and quiet boring.
No Man's Sky is the next one I'm hyped for. Just hoping it's as good as it looks and plays like they show ya. Heck never heard of a dev before having to make space probes to find any glitches or bugs before cos of how big the game is......

Mass Effect 3 (2012) the ending of an epic trilogy ended up being really bad
Duke Nukem Forever... expected a lot more for a game so hyped and being built for so many years
Hopefully it won't happend to Half-Life 3

I don't know why, but I was really looking forward to Sands of Destruction back in the day. It had a really cool premise, but then the writing turned out to be completely awful, the voice acting was highly mediocre, and even the gameplay had no depth to it.