… a toy version:

The universe begins with a single input, an arbitrary numerical seed — the phone number of one of the programmers. That number is mathematically mutated into more seeds by a cascading series of algorithms — a computerized pseudo-randomness generator. The seeds will determine the characteristics of each game element. Machines, of course, are incapable of true randomness, so the numbers produced appear random only because the processes that create them are too complex for the human mind to comprehend.

(Via.)