Understanding how users think, feel, and interact with digital products is crucial for creating designs that not only look good but also deliver exceptional user satisfaction. This book will help designers learn the fundamentals of design through the lenses of psychology, gamification, and biases. It includes numerous examples from actual mobile apps and websites, both Indian and global, allowing readers to connect the dots and deeply understand the psychological reasons behind various designs. Readers will understand how Fitt's law, Hick's law, and Miller's law shape layouts and decisions. They will also learn to use Gestalt principles for intuitive interfaces. You will discover how user behavior is influenced by the Zeigarnik effect, Halo effect, and Goal Gradient effect. The book will help you discover tips and tricks for gamifying your product, leading to better user acquisition and retention. Readers will learn about key biases that can impact design decisions.