there are ad ons in doom like dooms day then you can use the mouse to aim like in half life. and 3d model and new graphic like evil dead batman etc etc.in the old dos version you must have ipx to play muti player but in windows 95 you can have icp/ip to play and you can play cooperative in quake you can also play cooperative but in newer games there are almost no cooperative some of us don't have fast internet so then is super fun to play cooperative and they have improv the graphic the the newer windows 95 verison when you play mutiplayer you bare mask but in the window down there you show your face and gets smiles when you pick something up great game i have complete first and second and ultimate doom.
Review of Doom
