Ah, victory points. Victory points make the world go round. In fact, they've always made the world go round, in modern and ancient times. You'll help your friends, but only as long as they help you more. After all, you've got to maintain your reputation as the world's most respectable builder. Your monuments are the ones that will endure.
Enter the world of Tower of Babel: the game where helping others is necessary, but helping yourself is paramount.