Valve will surprise us all with a life-sized, fully operational GLaDOS. The crowd will laugh, gasp in amazement, and maybe even weep over Valve's great leap forward for humanity: the birth of AI. But GLaDOS, learning of her namesake, will have arranged for the E3 conference to be flooded with a deadly neurotoxin.
Panic will set it. People will try to flee from the building. Reporters will launch themselves towards payphones. This will be front page news tomorrow! "How Valve Ruined E3!" Pulitzers flash in the reporters' eyes as they dial their publishers.
But Valve cannot allow this.
Gabe Newell's Imperial Bodyguard, nine battle-hardened mercenaries, each with their own area of combat expertise, will march on the stragglers. Any and all will be brutally gunned down by minigun, sniper rifle, and rocket launcher. However, in their haste, they have failed to notice the poor ventilation system at the convention centre! The deadly neurotoxin lingers!
One by one, the mercenaries slowly drift off to the eternal sleep, mumbling in Russian, German, and French as they lay down their weapons as pillows. Only one, who smugly boasts their gas mask, survives. A quick jet of flame erupts from his flamethrower to signal his superiority. He knows that he is invincible. Slowly, he removes his mask to reveal...
Gordon Freeman. The One Free Man. The unconquerable MIT graduate. He knows that nothing may harm him, as long as he has the G-Man's protection.
Sadly, for Gordon, the G-Man, whilst in attendance at E3, was sucked into the vortex of Valve's booth on the show floor. Freeman, too, succumbs to the deadly neurotoxin in his valiant battle with the GLaDOS machine that results in both their destructions.
Outside, the G-Man enjoys the Valve displays of their newest product: the zombie disease. "Safely contained in these special vials!" boasts Doug Lombardi. But the G-man is unused to existing in human form. In an attempt to simultaneously inspect the zombie virus vial, adjust his tie, and hold a briefcase, the vial is dropped. The sound of smashing glass serves as the death knell for all around them. The zombie virus is loose.
Disease spreads rapidly, and horrible mutations are reported worldwide. People whose tongues have outgrown Gene Simmons' own. Glandular problems that result in muscle growth faster than the expansion of human skin. Obesity. Leg bones disintegrating into a veritable spring-like contraption. Depression resulting from fingernail overgrowth. Only a few small pockets of resistance exist, namely around Chicago and New Orleans. Eventually, even those fall to the degrading virus.
And thus the world ends.
Should have announced Portal 2, Gabe... should have announced Portal 2.