[Cait Sidhe]

I spent far, far too much time with Bangai-O back in university and it alone justifies finding a Dreamcast. There is no way to adequately explain to someone else just how much exploding occurs in that game, except to note that a) you will frequently counter attacks by launching literally several hundred homing missiles simultaneously, and b) you will occasionally be forced to do so several times in a row because an enemy is also doing it. It's like some sort of crazy reverse bullet hell with upbeat music and a film-noir talking sheep.