I have now beat Doom 1 and 2 and here is my opinion on them I think that Doom 1 has way better levels and is more fun to play compared to doom 2 but I think that Doom 2 has a way better final boss The Icon Of Sin compared to The Spider Mastermind in Doom 1. Also Doom 2 has more weapons... ok only one more weapon and Doom 2 also has more monster verity then Doom 1 but some of the new enemies can go jump off a cliff. So basically Doom 2 has more but Doom 1 is more fun to play so over all I think Doom 1 is a 9.7/10 and Doom 2 is a 8.9/10 in my opinion and now on to Doom 3.