How long does it take to play the Half-Life series?

I recently played all the way through the following games on the hardest difficulty.

[table id=1 /]

I have played through all the games before, but it’s been years.  I didn’t rush through any of the games.  I didn’t look in every nook and cranny of each level, but things that were interesting, I investigated.

I must say, the whole Half-Life series is a blast to play.  I am, however, disappointed at how much shorter Half-Life 2 was then Half-Life 1.

  1. I would be very interested in knowing how you timed your playing, and over what period of time—days/weeks/months the 33.8 hours happened in?

  2. @Robert Bruner: Steam keeps track of how long you play each game.

    I played Half-Life over about 10 days, IIRC.