Kieron Gillen: Invisible war is risky and is going to be controversial - which is the only way that you're going to get anywhere. If you don't take risks and aren't controversial you're going to be in real trouble.

Warren Spector: Exactly. The last thing in the world I want to do and the last thing I want Ion Storm to do, is just crank out another piece of sausage. The fact that there's a figurative "2" after the game is irrelevant to the creative decisions we made every single day. You don't have to avoid risk or repeat yourself to make a sequel. You identify the core of your experience and go with it.

One of the homes that Warren Spector interview found, Eurogamer presents Spector Versus Gillen Round 1.

No falls but, sadly, complete submission.