This is what Quake looks like in iD Tech 4 Engine

YouTube’s member ‘thone2008’ has ported the first level of id’s classic FPS, Quake, into Doom 3. thone2008 has used the Quake Mod to convert E1M1 from Quake 1 (using Romero’s Map Source) into Doom 3 Map format and the only things that are missing are Textures (but all the original gun placements are there). thone2008 then used Darkplaces’s HD textures to ‘dress’ the entire level. The end result is cool, so go ahead and take a look!