Valkyria Chronicles: Though the gameplay and presentation were quite good, the story was far, far from the gritty war drama I was led to expect. Unfortunately, it just served to cement the belief that Japanese audiences and creators will never, ever let go of their decades-old tropes that they repeat in every single RPG. You can't just have a contained conflict with ambiguous morality, it always has to come down to a save-the-world-from-evil plot with an overly theatrical, unrelateable villain. It ticked me off so much I could rattle off a bunch of gripes I had with the plot and characters, years after playing it. Plotholes, wasted opportunities and tired tropes.

In recent times, Batman Arkham Knight would have done it for me. it was the first game I got for my Xbox One. That series keeps adding additional layers on top of the game, but at Arkham Knight it just became too many layers. The gameplay felt bland because there was so much. And the driving was terrible.

That's an easy one: Total War: Rome II.

It's so bad that I'd be willing to let Beamdog have at it. ;p

Lunar Rescue (1983):

http://www.worldofspectrum.org/infoseekid.cgi?id=0002952

I gave my aunt a list of Spectrum games to buy me while on holiday and she got me this. (Bear in mind I think it was 1986 at this point.) No game since has ever crushed my hopes as much.

P.

There are many but most memorable are Unreal 2 and Diablo 3