In orginal DOS DooM yes. But why do we have those cool source ports for. ZDoom is very good one, with spawned SkullTag, with spawned Zandronum. ZDoom support ju

In orginal DOS DooM yes. But why do we have those cool source ports for. ZDoom is very good one, with spawned SkullTag, with spawned Zandronum. ZDoom support jumping/crouching, freelook (limited and very usefull). DECORATE + ACS support for modding. Zandronum adds up client/server multiplayer with dedicated server support. It even have OpenGL renderer for those heavy mods. I personally play on software with freelook and no autoaim at all. You can shoot just above monsters heads (and you often DO! when fighting strong monsters).