Tasha's Cauldron of Everything includes an interactive puzzle addon. To add Tasha's Cauldron of everything to a new or existing game, add via the Game Details Page. On the Game Details page, scroll down to the Game Addons section. Select the desired addon from the dropdown menu and then click add to game. The next time you enter the game, everything from the addon should be available.
Can only be used with Roll20; cannot be downloaded.