Originally Posted by tooblekane

halflife source isn't the original game in the source engine, i was very disappointed to find that out. the only real differences you'll see are the water effects and some physics improvements, but without the gravity gun to play with, and with the fact that the game wasn't designed with physics in mind it won't matter a lot. the levels, even the textures, are the same from the original, except for some slight quality upgrades that came with the halflife blueshift addon (higher quality models, guns, etc), though all still very much of the halflife 1 engine.

not that has any effect on my choice to buy the deluxe edition, but it bummed me out.