Ta-da! This took about six hours, cumulatively. Wanna know how much of that time I spent on the background?

...About twenty minutes.

Also, it's pretty obscure, actually kind of irrelevant and only vaguely similar, and not a thing I think I've ever actually even mentioned on this site, but if anyone can figure out what I was thinking about while I drew this, I'll give you a free digital sketch request. Here's a hint for ya: it is a video game.