>>713225380
marathon was a copy and paste job with little or no edits, spread across a large portion of the game, and is easily identifiable.

The image from undertale is a small part of a design, and while in motion, it is very hard to decipher as anything other than just visual noise. It isn't used to portray a city, like the original source; whereas in marathon, most of the stolen imagery is used as futuristic clutter, which is what the art was made to look like