Mass Effect
Three times I've attempted to see the magic everyone else sees in this game but it just isn't there for me. The story didn't engage me, the universe wasn't interesting nor did it feel cohesive but rather a series of disconnected locations joined by loading screens - no sense of travelling the vastness of space. The combat was poor and the only thing left after that was selecting dialogue from a dialogue wheel. I own the sequel (bought it twice) and I enjoyed it a lot more although I've not really got to far into it - must go back to playing that.
Fallout 3
Everything about this game I should have liked. The Bethesda pedigree, the setting, the style of game - all made think "yup, this is going to be **** incredible". And I wanted to like it, I really did but nope. I can't even quite pin-point exactly what it is but it just bored the hell out of me and after 15 hours telling myself I'd get hooked, I never did.
Amnesia
Now I did enjoy this game BUT it's regarded as one of, if not the, scariest games of all time. And it isn't. What playing it made me realise is that gamers everywhere are big girls blouses. A spooky castle with gusty winds blowing open doors, monsters groaning in corridors, candlelights blowing out - sophisticated horror my arse. The only thing missing is the cart on the tracks and the word removed at the front door charging £3 a ride. Amnesia ain't got shit on The Shalebridge Cradle level.