Here are a few things I've tried or I'm planning for my players, who like a good puzzle every three or four sessions. 1. An invisible maze. My players don't have a lot of patience for this kind of thing, so I used a fairly simple maze. I copied the lines onto the dynamic lighting layer. Then I removed the maze from the page so there was nothing for the players to see but an unobstructed stone floor. With global illumination and restricted movement chosen on the dynamic lighting, they have to figure out how to get from A to B by feeling their way. 2. I used the Laser Puzzles, Fantasy Edition from the marketplace and chose three rooms, each successively harder. I had to change the backstory to fit my campaign. The hardest part for the players was figuring out what they needed to solve to get through the first room, but once they did they enjoyed the logic puzzle. They were pretty clever, so I had to force some dex rolls to allow for "mistakes" that summoned a couple of monsters, just to spice things up. 3. I have also imported the Lock Puzzles from the marketplace. This will be part of a long story arc that is eventually going to allow them to open the door of a legendary library of magic. They have collected only one key so far. I anticipate they will be challenged by positioning and rotating the objects on the VTT. 4. I am planning a really nasty devil's choice for them, a Kobayashi-Maru, based on the trolley problem , with two differences. First, it is clearly set up by some malevolent intelligence, so the PCs can't just walk away and let it happen, and second, the victims are aware of what will happen to them, and that the PCs will be responsible. Pretty heavy. They are creative and high-level, so they may think of a creative solution worthy of being rewarded with success. I can always use new puzzles too, so I hope some more get posted here.