Fate/stay night

Don't know how to categorise this one. It's a 'visual novel', according to Wikipedia.
Eliezer Yudkowsky thinks it's the bees knees.
Apparently it has naughty bits.
I first had a crack at it in May 2012, but didn't get anywhere. Tried again in May/June 2013, but still found it hard to get in to. Maybe I'm just in a distracted mood these days (one sec, just refreshing Reddit) but I'd prefer it to either be a manga or an anime, so I could adopt the appropriate mindset.
Category:Video games
Category:Japanese video games
Category:Visual novels
Category:2000s video games