Does Steam allow animated pictures? (E.g. GIFs)
Between Starmade's rather unique ability to capture animated GIFs without third-party software, and the incredible sensation of Scifi art in motion, animated pictures can really impress. (What with pictures being worth a thousand words, and videos being worth a thousand pictures, depending on length and content...) If you look at Scifi artwork like I do, which pictures stay in your mind longer? The simple picture of a ship, or a mid-action scene, suggesting movement? The action scene is going to strike you more deeply, and stay with you longer.
Example: Seeing a ship hang in the air in a way that bricks don't is impressive. But seeing that ship glide and maybe fire off a shot or launch a shuttle is a cinematic experience. (Just make sure Space Dust isn't active, during the capture.)