Progress through the world is as continuous as to be expected, with scripted sequences in place of cutscenes and the player kept in complete control of the first-person narrative throughout most of the game.
Due to its dedication to the gameplay style of the original Doom, the mod features a heavier emphasis upon combat over puzzles, although the latter is still utilized fairly regularly, compared to Half-Life. Players are required to navigate through levels, fight enemies, solve puzzles and monitor their supplies of health and armour. As a mod for Half-Life, the gameplay of Half-Life: Doom does not significantly differ from the base game.
