There was also a TV series in the 70's here in England called 'Tripods' which was also based on a set of books. It was a story of fhuman rebels fighting against an alien force that enslaved humans with brain implants The aliens also had giant metal tripod walkers.
You are ****ing joking right?
How can someone be so literarily ignorant?
H.G Wells wrote 'War of the Worlds' In 1898 and it featured bipedal walking death machines. In fact here are some illustrations published with the french translation of the novel at the turn of the century.
The only reason people think GMan is an alien is because in one of the fan made SP mods for HL1 has him talking with a snake like lisp.
If you totally remove that from your mind and look at whats official there is no supporting evidence that suggests hes an alien.
Hmm from what I remember the leak did have large underground tunnels, possibly beneath Ravenholm where we saw large sac like creatures that gave birth to headcrabs much in the way that a spiders eggsac does.
No. A nuke has a 1-2 KM blast radius where everything is converted to hydrogen, everything outside of that is only effected by the shock wave and the radiation.
But that blast would not be of a size great enough to penetrate what? Over 15 miles of winding corridoors reinforced with blast door and steal plates backagede between dense rock and compacted sand?