He also contacts a number of websites, Penny Arcade included when they query some elements of the offer. Mostly wondering if he'd have to sue himself if the game got made and someone got killed. So, he states in some comments that Yes, the money is real, the money will be donated, all is above board and legit - so convinced is he that it'll never happen.
Well, it did. Adhering to the admittedly vague nature of his offer, several groups of gamers produced mods for some games that covered all the bases. It was produced, it was distributed, all according to the letter of his proposal, AND they did it before 2006 (though maybe not adhering to that criteria explains what happened next). Of course, not being man enough to put his money where his mouth is, Jack backs out, claiming that it was all a satire, including the bits where he said it wasn't a satire. Theres so many double negatives involved in this that I'm afraid I might break my brain but the upshot is that he's not paying out or making good on the offer he laid out in full view of hundreds of thousands of people.
Then, the two blokes at Penny Arcade, who are neither lawyers nor fabulously rich, donate the $10K in Jack's name. I'm guessing this one isn't satire, which would make them two of the classiest human beings on the planet.