Deliverance is a free single-player expansion pack for Sierra's Half-Life. In Deliverance you reprise your role as Gordon Freeman in a story set after the end of Half-Life. Voted #8 in the Top Ten Half-Life Add-ons by PC Gamer magazine in May 2000.
Deliverance sure lives up to it's name.
Leading around scientists has never been my cup of tea, but this mod was designed well enough for me to have a blast.
The gameplay is fun and there are many places you can leave your scientist buddies to lay down low while you deal with threats.
The AI is well modded and the level design is marvelous while there are a few bugs and the scientists can be a pain in the flank at times. But Overall, this a mod is worthy of downloading. It's certainly worth your time :)