I might kinda regret this, but... Spyro: Enter the Dragonfly. Don't get me wrong, Spyro 2 is my favourite game of all time - no joke. But ETD was rushed for the holiday season, and was laggy, broken, had so many glitches it could make Pokemon red cry, (maybe not but pretty close) and not to mention awful voice acting, mini-games, and, the worst of all... 5-minute long loading screens (and longer).Like, really? This is the PS2 for crying out loud. Only worse loading screens was Ratchet and Clank 3 but that's because I had a dead disc.
Spyro is my childhood and I love him so... But ETD deserves to die. I can't believe it's the only one my GF has played. A Hero's Tail? Soooo much better.