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.

Graphics for creating characters

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

A perspective where the camera is placed directly above the player. Common in 2D games, but can also be used in 3D games.