When we see sequences of numbers — in triple-, double- or single-digit numbers — repeatedly, many believe it's not a coincidence. In fact, a repeating number like 4 has deep spiritual meaning.

In Obduction, the Villeins use a base 4 number system — and you'll have to use it to solve puzzles. To understand it, you have to think about our own numbers for a minute. We use base 10. This means ...