Hello, one of the mystery cards has been revealed in this new post by the new Poptropica creator for Skulldugggery island, Captain Crawfish.
Here’s the new post:
An exclusive Skullduggery Island trailer? It’s in the cards!
Greetings, scallywags! I’ve plundered some important news from the high seas of Poptropica. It seems that Poptropica members will soon find some buried treasure in their inventory. Keep an eye(patch) open for an exclusive sneak peek of Skullduggery Island!

And I’ll see if the salty dogs on my crew can dig up what’s hiding beneath that other question mark, too…

IkeWB/MysteryMonster signing off.