In a talk entitled The Sandwich of the Month Club, writer and designer Dave Grossman (Day of the Tentacle, The Secret of Monkey Island), who now works for Telltale Games (Sam & Max, Strong Bad, Wallace & Gromit), enlightened the audience on what he considers to be important when designing episodic games. Telltale's Sam & Max episodic series started back in 2006 has since run for a total of two seasons. The Strong Bad series is just starting up, and Wallace & Gromit has yet to be unveiled.
So, what is a sandwich of the month? It's Grossman's metaphor for good episodic gaming. "It goes like this," he said. "If I had a sandwich of the month club and you join what you expect from me is the in the first month you're going to get maybe a tuna sandwich, the next month I'm going to send a turkey sandwich, the next month I'm going to send you a ham sandwich with peppers. You're always going to get some kind of a sandwich experience and it's going to be good every month. It's going to be a little different, but it's still going to be a sandwich. What you don't want is for me to make one giant sandwich and then send it to you a piece at a time. You're waiting by the mailbox the first month and a giant piece of bread arrives, you're going to be upset at me."