I was pretty hyped for Black & White after all the stuff I read about it from the devs in magazines. This was after their epic games like Theme Hospital, Magic Carpet, Syndicate Wars etc so I expected quite a lot. Haven't bought a Molyneux game since. The game wasn't bad, it just seemed half a game and wasn't quite what they built it up to be
Was vaguely interested in Darkfall since 2003 or so, then in 2008 when it seemed to be coming out I was pretty hyped, expecting a UO type full loot RPG mmo game with decent pvp. Was fun at first then was disappointing a few months in when it was clear it wasn't ready or had half what was promised. Just had infinite PVE grind to keep people playing (no caps) and potentially good pvp, except as people levelled it got pretty bad. I hear its better now and they are relaunching at some point with issues addressed. I'll probably play again then
Was pretty hyped for Red Orchestra: Ostront too, which turned out to be a great game.