Everyone likes a good space game, right? Then you’ll need some way of creating spacey backdrops. You could go for an 8bit parallax pixel starfield, or, at the other extreme, you might use authentic NASA imagery of the night sky.
Or, if you want high-res original, believable space backdrops, I highly recommend Spacescape on SourceForge. It’s a free application, licensed under MIT, and can generate beautiful parameterised space backgrounds.
What’s more, it doesn’t just generate single images – you can create a set of 6 cubemaps ready to import straight into a Unity skybox and get a full 360 space panorama. Fantastic asset for any developers looking for resources for a space-themed game.