Zillion is compared to Metroid much of the time as one of those games that's a great single player experience-making the map, finding your way through the base, collecting power ups and ultimately running like hell when the place is about to blow.
However, I rarely see anything about people playing through Zillion as a group. The game lends itself extremely well to that-assuming someone has printed out a map, you've got 1 or 2 navigators, someone to keep track of the special codes, someone to hit Pause to switch characters, the player themself, and the entire room to remember the door codes for each room.
This makes Zillion one of the most entertaining party games I've ever bore witness to. A room full of people, yelling and trying to work together to blow the Norsa to hell, and all the shouting and panicking when the bomb is set and escape is necessary, it's a very rich way to play the game.
I know there are other games like this. Silent Hill comes to mind, and probably Impossible Mission as well. Anyone else have similar experiences of a group effort to finish a single player game?