Binary Bunker

Levels 59–99 · numberBases

An underground fortress of zeros and ones. Convert between binary, hex, and decimal to disable the locks.

Study Before You Play

Brush up on these topics to sharpen your skills for this zone.

Number Bases: Binary, Hex & Decimal

Learn to convert between binary (base-2), hexadecimal (base-16), and decimal (base-10).

Divisibility Rules

Learn quick tricks to tell if a number is divisible by common numbers — useful for base conversions.