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Welcome to the Understand How Video Games Work series. This is the How To: DIY Programming Concepts section of the series and is the first book in this series. It can be difficult to begin programming video games, especially if you don’t understand how video games work in the first place. This book is designed to introduce you to some solid code and concepts that explain the basic and intermediate concepts behind game making. The first chapter will be going over characters and enemies and we’ll be going over subjects such as: • How attacking works between characters and enemies in most video games along with a code sample • How Characters are rendered to the screen (along with what rendering means) • What enemies and characters most commonly share in terms of attributes and functionality The second and third chapter goes over the collision barriers, which determine several factors in video games such as fall damage, loading screens, and how to actually walk in the game. We’ll also be going over how projectiles work within most games along with some code examples. In the last chapter, we’ll cover how gravity is achieved in most games and this includes: • Jump Gravity - A type of gravity that only takes effect when a character jumps • Fall Gravity - The method of gravity utilized to keep characters on the ground • What tends to occur when you don’t have either form of gravity in place when trying to play the video game. While this is the first in its’ series, it also goes over some of the most complex topics in the videogame industry that also happen to be the basics of nearly every video game created