But what to do for people who seem to write code, but have no time to study all the intricacies. As an answer, I will give Unreal Engine as an example.
Creating a game: where to start
A mod (short for “modification”, game modding) is an addition to a computer game, usually written by third-party developers or amateurs using SDKs, attached to the game or special, amateur programs designed for game modding.