Dive into the intriguing world of numbers with 21016, a unique educational game designed to master the mysteries of binary (2), decimal (10), and hexadecimal (16) number systems. Perfect for enthusiasts and learners alike, this app offers an interactive and engaging way to understand and convert between different numeral bases. Whether you're a student, a coding beginner, or just a curious mind, 21016 turns learning into play with its intuitive interface and progressively challenging levels.