When I first starting using Roll20 I wanted some tile-sets that I could use for some encounters without being super complicated. Luckily I found and purchased some map packs by David Hemenway which I used for almost every encounter in the 2 campaigns of Horde of the Dragon Queen that I ran , there are some wonderful features that you get if you are to invest in a single artist, like David's work: The colour palette is uniform across all sets - adding in a item from another pack doesn't make the object look like a it's a quest item in an early point and click title. David designs all his packs to cast shadows in the same direction, and normally gives different rotations versions too so you can have the right map content without sacrificing your uniform shadows. A lot of layers can be applied to give the map the exact look you are going for, achieved by having faded elements and wall edges are seperate elements if you are working on something more customised. I word of warning if you are looking to purchase map resources on Roll20, Purchasing a single resource will yield you the in-game assets and in many cases the downloadable version of the assests. Check the asset before purchase to be sure. Look for the text : Can only be used with Roll20; cannot be downloaded. However even if you can download an asset purchased individually, if you purchase a Bundle of Assests, downloadable versions are unlikely to be included. DungeonDraft So for years I would put together maps in Roll20 using these assets, which has been working well but suffers from a couple of issues: Building larger maps in Roll20 starts to become clunky Loading in and out of maps that use a large number of tiles starts to slow things down on the browser DungeonDraft Logo About 2 years ago I purchased the DRM and subscription free DungeonDraft to help me start to build maps outside of Roll20. Available for Windows and Linux, DungeonDraft supports universal VTT export. However Not long after purchasing the tool I took a 18 month break from GMing, so this year as we started a new DND campaign I have been able to make use of the software. There is a set format to create asset pack for Dungeon Draft to us, I start creating some before, however on my return I discover the handy Dungeondraft-GoPackager which is a handy Dungeondraft asset Packer, Unpacker, and Editor. Takes a bit of getting used to, but once in the right headspace labeling assets was pretty easy. Below is an example of a market I was putting together for my current campaign, I watermarked it as the assets are of course not mine to share. Having the ability to just export the base map and import to Roll20 is great, but also means I just add the dynamic elements and characters, meaning load times are much improved, secondly I can think about moving away from Roll20 in the future as I'm not limited to only that platform DungeonDraft Example