construction simulator was probably my most regretful buy. i spent a total of 20 minutes fighting the terrible controls. got my money back though, to my surprise it had a 90% rating at the time. mind blown.
I was big into picking up all the Humble Bundles about 5 years ago or so. It's fair to say that about 80% of my Steam library has never even been downloaded let alone played.
Spintyres! An hour of trying to get out of mud then getting every other truck stuck in the mud that went to rescue the first one!
Skyrim, I played the others in the series from Daggerfall, but played it for about a hour and just could not get into it could have been use to other interfaces which this was different to.
Not sure i wasted it as I wanted to support the Devs but I bought assetto Corsa 2 and technolust along with a whole bunch of other VR games and have never even installed.
Same with dirt rally 1 (played for a few hrs)
Loads of stuff on PS4 never played, drive club, uncharted 4 and the expandalone for it, I have over 1000 games and I reckon 500 of those I paid "proper" cash for 1/3 of which I played either never or under 20 mins and a bunch more only put a few hrs in.
Edit did I just do mega necro? Sorry it was on front page of a forums on my phone