Favorite Game of All Time

It is extremely difficult to imagine my favorite game, because there are so many that I've loved to play for so many years. Any game in the Madden franchise is up there at the top, but I don't know about favorite of all time. All time is going to have to go to Halo 2; I can remember missing an entire day of class, on multiple occasions, because my buddies and I were playing Halo 2 on Xbox live in the dorm room when I went to Indiana University. It never got old. The game itself was amazing at that time and the experience of playing with 8-16 of your buddies at the same time, and all the trash that we talked, was priceless. I only have a few buddies that I still play with from time to time. Your Halo buddies change, but the trash talk stays the same. I play Halo 3 now and am looking forward to ODST, but Halo 2 definitely has a special place in my heart.