Incredible for it's day
Ok this is Doom 2 which takes place after the events of the first Doom. You were a space marine trapped on another planet fighting hordes of invading monsters. You won, and managed to make it back to earth, only to find the hell spawned demons had started to take over down here too! You can read a whole lot more about the Doom story on some webpages, I'm not going to tell you it all here, just to note that this is one of the most overlooked parts about this game. Sure, it seems that all you do is kill kill kill, but if you want to know why you're doing all this, check out the many websites about the Doom story. There was even some Doom novels and a movie released recently, but I don't think it were true to the classic game.
What's so good about this game anyway? Well I''ve been playing video games a while and I think it comes down to one thing - fun. Doom is always that - the constant battle against the demons, the different weapons, the way you have to find keys which are usually heavily guarded to exit a level....it all gets addictive to the point you realise you've been playing this game for years and it's still fun to play levels even though you know every bit about them. The Doom game before this and even the Final Doom game are really good too, but I have to come down in favour of Doom 2 as my favorite overall. I just like the level designs and it was the first of the Doom's to introduce the Double Barralled Shotgun. Now I've said before games are fun and addictive but in this game when you fire that particular gun and take down about 5 zombie men or a gang of Imp's all at once, its impossible to describe to you how good this is! Also learning about the different monsters and how they attack you is fun, and soon you know what every one of them will do. Graphic and sound aren't great by todays standard's, but hey if gives the game character and it's way more than 10 years old now. The PC games are the ones to play, this game was ported to alot of consoles back then, but if you had to play on any console version, I recommend the Playstation version, which stays true to the PC games except a few levels are missing, but it also has some exclusive levels, and a more horror-style ambient soundtrack, instead of the cheesy midi tunes you get on the PC.
Overall a classic game that's still fun to play today.