I'm not really familiar with those games, only with the infamousness of molyneux, but wasn't the player's actions leaving behind a pretty clear effect on the world a common theme in those games? That may have been what he was referring too.

It may also be him naming those because those games were the heights that he wants to go back to. The games he had made when he was still relevant must be much more present in his mind than they are in ours.