Best mod ever, pretty much the best zombie game ever!
The good thing about this mod is, it isn't short. Most Half Life mods you play can be beaten within an hour, with this one the first playthrough with out cheats could take maybe 15 hours. My fastest time is 4 hours, after playing it multiple time in a row and memorizing every thing... Except I actualy got lost in my last playthrough......
Any ways like if takes 4 hours after you've memorized it all, thats A lengthy game 2/3 the length of Half Life. I can't get over how fun this game is, the story is pretty damn cool. It's a must download if you have Half Life and you like blasting zombies. If you don't have half life go out and buy it, just for this mod.
Then after you play through it a few times, download Sven Co-op 4 as it has a co-op version of they hunger episode 1 and apparently ep 2 & 3 following shortly. I recomend only having 4 or less people when playing it on sven co-op to keep the creepyness.
I can't wait until They Hunger: Lost Souls and once you play the first one, you will hunger for the sequal as well.