Oh, fun! Great way to introduce the Roll20 drawing-tolls in a collaborative way. Also excellent use of Card Decks feature for something other-than plain Playing Cards. We've just been playing a variation of The Quiet Year incorporated with Swords & Wizardry on Roll20, creating a town environment where the adventuring party spent downtime. Great to see this card-deck and rule-set in every Pro's collection. You certainly can play The Quiet Year standalone as its own game with a group (does not need to be tied into a D&D campaign backstory at all, doing this is more of a stretch-experimental idea that tends to come up on Roll20 because you still have The Quiet Year in your collection and can transmogrify the Spring,Summer,Fall,Winter card decks into "other" game tables, other-games, in the long run after trying the game as it plays on its own. I would recommend expecting to read this game's (fairly easy) rules and try it the first time, on its own, before going on to use concepts (and possibly Cards) from it as a campaign companion in RPG's.
