1. Halo (Xbox) - Current generation of gamers call this "the best game ever." So to be cool now, you need it. 2. Final Fantasy VII (PS) - because if you don't, then you don't know anything about gaming. 3. Super Mario 64 (N64) - redefines a genre and a company. 4. Tetris (GB) - c'mon...it's Tetris. 5. Grand Theft Auto III - creates a new (and now popular) genre.