I play a lot of older video games in my spare time. Back in their day, these games were at the peak of graphic fidelity. As time has moved on, these games now look dated. One way to keep these older games looking fresh is to "mod" them. Modding is the act of editing the game files to improve graphics, gameplay or pretty much anything about the game.
I taught myself to mod games, starting from simple edits in text files to replacing entire textures to improve a 3D model's look. Below, you can see examples of my game mods.
Here is an example of using edited text files to modify a game. I created a mod for Euro Truck Simulator 2, a truck driving simulator for PC, that adds additional engines to the game. I added two engines to this particular truck, which you can see at the bottom of the list on the left of the truck. These engines are created and added through the use of .txt files and contain code that the game can read and use to display the new engines in the game. The code contains the engines' names, performance figures and price.
Here is an example of using edited image files to modify the looks of a game. I created some new textures for the rear lights of some cars in Live For Speed, a driving simulator for PC. I have included pictures of both the original lights and the edited ones to show how large a difference these modifications can make.