One of the most amazing changes in gaming throughout the years is how much graphics have gotten better. I'm not sure if when games were originally made they even thought that it would come this far, or that a game would look so realistic now. One of the most important things for a games graphics are it's engine and the platforms capabilities. For example, a Playstation 2 couldn't handle any Playstation 3 or 4 games. The engine determines what actually occurs in-game. That includes things like physics, A.I., textures, player details, hair graphics, and more.

If you think of where we came from, like the 8-bit platformers to now, it's just truly impressive. The game series where it's most obvious in the changes are Final Fantasy and Metal Gear Solid because both have been around since the 1980's. Square Enix and Konami both have some of the best game engines of today. Konami has the FOX while Square Enix is moving on to use the Luminous game engine for the new Final Fantasy XV. This first link is a tech demo for the FOX engine https://www.youtube.com/watch?v=9i095tQ7QN8. This link is for the Final Fantasy XV trailer showing the Luminosity engine https://www.youtube.com/watch?v=Ny69S-GWcU8. Comparing both to what they started at is truly just an impressive feat in technology when you think about it.