LICK in Second Life is interesting. This is the home of The McFly Project and connects differing worlds, from the creepy fairground landing point where you can test your feats of strength to a futuristic landscape that you can use vehicles to travel around.
I wasn’t quite sure what I was looking for, although I did wonder if I had found the Droid I was looking for at one point.
The landscape and items are extremely engaging and so is the exploration, following the clues I found myself in an underwater cavern, with a hint that I needed to pull a lever.