I honestly think I liked Dimension of the Past a little more than the expansion packs. It's very stripped down, with only the base Quake enemies and weapons appearing throughout the ten levels. Where it shines is level design—I don't think I disliked a single level in this episode. The maps are arguably more linear than the previous mission packs, but there aren't many cheap or frustrating moments. This was the first episode I finished on nightmare difficulty, and I rarely felt pressed for ammo compared to points of Scourge of Armagon on normal difficulty. Even though it ends with a bit of a whimper, the rest of the ride makes up for it.