Getting things out on a deadline can be hard. In Assassins Creed 2 you’re constantly holding down B, even when you’re not.

The idea came to make the blending system completely automatic, activating on its own depending on your proximity to the crowd. However, the coders weren't happy about the prospect of rewriting an important system within the game. The solution turned out to be astonishingly simple. "I'm at my desk thinking, why don't the players just hold the B button? It's that simple!" Plourde remembers. "So I taped the B button down. It's automatic, and it works... it took maybe two hours to code in that cheat so that when you're walking you're just automatically holding the B button. The thing is, as soon as we implemented that, the player impressions on blending changed from something that was bad to something that was good, so we're really happy about that. Not only that, but every mission that required the player to be stealthed had the difficulty lowered and the fun factor raised."