Sales end in 28 hours. 10 bucks gets you  Team Fortress Classic, Half-Life: Opposing Force, Half-Life, Half-Life: Blue Shift, Half-Life 2, Half-Life: Source, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One & Episode Two

http://store.steampowered.com/app/220/

As well as most Half Life games, separately.

To anyone that has never played Half Life 1 & 2, they are quite excellent. Dare I say some of the best games - both in narrative and gameplay  - that have ever come out.

It's reminded me to play through HL2 again, which brings me to suggest the Cinematic Mod, a 10gb mod that gives it a lovely graphics overhaul.


http://cinematicmod.com/

Oh my. Well it  seems after the "Steampipe" update that changes all .gcf (assets) fiels to .vpk, the Cinematic Mod no longer works, though they are working on an updated version. Crud.