Let's say I want to release a program, written in Java, that is a sort of encyclopedia containing data about a game. This program would contain images from the game, obtained via screenshot, and some of them processed in a program like GIMP. The purpose of these images would be to illustrate about stuff that exists in the game, and not to be a part of the interface of the program (like the appearance of the interface's controls). I would like to license this program with the MIT License (Expat).
Is it possible? If not, can I release these images in some other way and make my program load them from the outside?
Searching for the answer on Google was nigh impossible (or I don't know the correct search terms).