If you can provide more details on the specifical kinds of tiles/maps you're looking for, I can consider dedicating some work time towards them. This may not be precisely what you're looking for, but I have the Starlight Pack on the marketplace specifically to provide starfields and outerspace backgrounds for space battles. <a href="https://marketplace.roll20.net/browse/set/72/wrights-starlight-space-pack" rel="nofollow">https://marketplace.roll20.net/browse/set/72/wrights-starlight-space-pack</a> A free set is here: <a href="https://marketplace.roll20.net/browse/set/73/wrights-starlight-space-sampler" rel="nofollow">https://marketplace.roll20.net/browse/set/73/wrights-starlight-space-sampler</a> There used to be tons of free spaceships on the marketplace, but their numbers seem to have dwindled somehow. Yet there are still some here if you search using the term "spacecraft": <a href="https://marketplace.roll20.net/browse/search/spacecraft/1" rel="nofollow">https://marketplace.roll20.net/browse/search/spacecraft/1</a> Cheyenne, above, has some excellent tiles in his Steampunk pack for representing metal plating for maps where armored troops might engage each other. Endless Terrains was created not just as a fantasy tile pack, but also one for modern and sci-fiction games, including ones that might take place on lava or desert planets, and goes so far as to include tiles for organic locations like the Creep from Starcraft: <a href="https://marketplace.roll20.net/browse/item/8233/organic-alien-tile" rel="nofollow">https://marketplace.roll20.net/browse/item/8233/organic-alien-tile</a>