As anticipated, id Software finally opened the kimono for Doom 4 (technically just "Doom" but that would cause problems for obvious reasons) at the Bethesda pre-E3 showcase event. There's descriptions and reactions of the reveal everywhere you care to turn: Polygon. Kotaku. PC Gamer. Eurogamer. Gamespot. Destructoid. Youtube video of the gameplay footage. Perhaps most interesting was the announcement of "Snapmap", which appears to be a grid-based level editor where players can assemble prefab sections together and add their own decorations and bestiaries, as well as coding their own custom logic to create new objectives and even gameplay modes. id has said that they intend to place more focus on the "community" aspect of the game, which seems vaguely relevant somehow. We'll surely be getting tons more info in the coming days / weeks, but things certainly look intriguing so far.