It is possible to edit the arcade game scores. Terpz did it about a year ago, and posted somewhere as to how. Its a little file you use, and when it submits your score, you edit the URL or something to make it say a different score..

Also, the highest score possible in spear toss is only 530 ish. Thats the world record.

Its not a database issue, its a hack when submitting scores. And no, ic ant do it, and i hate people that do.