itch.io

Uses two-dimensional "sprites", 2D images created and used on a flat plane, as opposed to the three-dimensional models or environments found in 3D games.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

Self-published, small-circulation booklets of original and appropriated texts and images on controversial or niche topics in unpolished or unusual layouts, or some combination of some of that, maybe.