xDHxD148L0 said:
I heard these games were good, are they worth checking out?
Yeah, absolutely. The first game had more of a horror thing going on, which I thought was very effective (although there were those who disagreed) while the second is more of a straightforward shooter. The AI was a little less impressive in the second too, I thought, although that could be a consequence of the level design: The original was almost all indoors, office environments, which took some criticism for being overly repetitive but also maximized the capabilities of the enemy AI and made for some incredibly intense fights. The second one... again, just a bit more average, but still well worth playing.
If you're interested in the story, you really need to play them in order (although you can easily skip the expansions, since they're essentially non-canon at this point; fun enough to play as action games but meaningless to the story). There's a lot going on in the second game that will only really make sense if you have knowledge of the original.