D&D’s Rime of the Frostmaiden is a masterclass in sandbox adventure design

In my living room there is a framed drawing depicting a party of adventurers. An armored warrior is kneeling in the snow, examining a ritual circle made of blood. A mighty goliath is carrying away a passed-out wizard in his arms, while in the background two elves confabulate suspiciously. It’s one of my favorite scenes (drawn by one of the players) from my experience running one of the best fifth edition D&D campaigns, Rime of the Frostmaiden.