Good video games have always been a driving factor in all of my purchases. But sometimes you just cannot get enough of that one game and you want to experience it on another platform. As for myself I noticed I have been buying the same games twice, one for my Xbox (sometimes twice for that) and one for my PC. I myself purchased: Splinter Cell Chaos Theory 3 times (let someone borrow it never returned, and traded a copy for a cell phone), Fable: The Lost Chapters, GTA: San Andreas,and most recently Deus Ex: Human Revolution. So my question to you is what games have you felt were worth buying more than once?