Originally posted by bart_11:Considering the fact that Black Mesa is NOT really a remake, I recommend that you play HL:Source first. And Black Mesa is not a regular remake IMO because the level design is often completely different than in the original, and many other things have undergone great changes. And some stuff can't really be considered canon, so if you want the story, play the original HL or HL:Source (which is pretty much HL1 with ragdolls and a bit better graphics). Black Mesa can be a good "dessert" - a modern interpretation of HL1. Then you should play HL2 and its Episodes. The HL1 expansions are not made by Valve and therefore not really canon either. You don't need to play them to understand the plot.