Levels are completed by finding an exit, whether it be a switch or a teleporter the goal is simply to advance to the next area. Each level is infested with demons that can be killed with a variety of weapons that can be picked up throughout the game. The game still consists of the player navigating large nonlinear levels.
Instead, the development team took advantage of advances in computer hardware since the release of the original game that allowed them to do more with their game engine by making much larger and more intricate levels. There were no major technological developments, graphical improvements, or substantial gameplay changes. Doom II was not dramatically different from its predecessor.
