I had this idea, I wonder how would DoomRL look like if when after defeating last boss, dying, it pulls you, together with it, to one of the hell worlds. Now you are in strange, dark, wide world you don't know and you want to get out.. your ammo soon runs out and you need to use strange weapons and devices found there: made of bones or other unidentified weird material. It is strange world, you don't know where to go or what to do, or what you see.. *grin*