Doom 1 was better, but Doom 2 still lives up the hype.
The graphics are 2D sprites, good for it's time but it suffers now. The music has gone from Doom 1's AWESOME to Horrible and depressing. The sounds are alright, nothing quite like hearing a cyberdemon just before it blows you're head off.
The only thing that really lets this game down from it's predecessor is it's horrible level design. Ugh. It's so BLAND. Every level is the same in some way or another. In Doom 1 there were 3 different types of levels- Base, Fort and Hell. In Doom 2 it's all the same- Crap. Every texture is brown, it's not even FUN.
The Boss has been replaced from the Cyberdemon to a GIANT GOAT SKULL TEXTURE AND THE WALL. Yes, the final boss IS A TEXTURE.
Luckily, the Multiplayer is AWESOME. A hell of a lot of fun which has kept me playing it all these 11 years. This game invented the name 'DeathMatch' and it damn lives up to it.
All in all, Doom 2 is a fun game....made better with ports like www.skulltag.com, but it could get better.