From a list of constructive criticism—compiled from the suggestions of fans, reviews, and internal suggestions—a list of features to be added to the game was distilled: some of these were 800 x 600 resolution, 3D support, and character kits. In Baldur's Gate, the game's engine and content were being developed at the same time; whereas in Baldur's Gate II, the engine was running from the start. Having a completed engine meant they could direct their efforts towards producing content, instead of focusing on basic functionality.