Projector actually. In college we played it with foot tall bombermen.
And dont get me wrong, I have a Dreamcast and enjoy many of the games on it: Chu Chu Rocket, Soul Calibur, Toy Commander, Powerstone, just to name a few. But it just came out at a time when I was wavering in videogames and never really got my attention. The Saturn was really the last bastian of 2d console gaming, so it will always be with me. It also had Clockwork Knight...