Any game from any platform. I have two. Call of Duty - Black Ops - The first big game I got after building my PC. Sadly the bugs prevented me from playing it for a long while, and when I did get round to playing it, I felt that it didn't live up to the hype Legends of Pegasus - I love my 4x space sim games, and this one seemed really promising. After weeks of promises regarding updates, bug fixes and work, they cancelled it. I had to twist Steam's arm to get them to give me my money back, and even then it was in-store credit rather than an actual refund.