I fondly remember the assembly programming tutorial which Bullfrog did in ST Format magazine back in 1991, which was the first time I had been exposed to "real" games programming techniques in assembler (the ST lacked the custom graphics hardware the Amiga had and doing something as simple as drawing sprites efficiently onto the screen was pretty tough).

Bullfrog made some great games. My favourites were Powermonger and Dungeon Keeper. The author of article seems pretty critical of the fact that their games were procedurally generated and became rote too quickly but I personally preferred those sorts of games. Too many games nowadays are highly scripted with a story that goes exactly the way that the designer wants it to. I'm more of a fan of a game world with a few simple rules, where the gameplay is an emergent property of those rules.