The MacGuffin Packs are sets of maps, with some plot-hook prompts, ready for you to use in your adventure games. They can be used with almost system, but is intended to be used with games such as D&D. Each pack is themed after an environment or concept.
They are all available at DriveThruRPG and will be available as a map pack and/or Add-On on Roll20 in 2019.
More packs are planned for 2019.