Yes, WASGIJ is jigsaw backwards!
Now the most popular puzzle range in the UK, with WASGIJ puzzles the picture on the box is not the one you will complete. It's similar, but just a clue. There are 3 series of WASGIJ puzzles:
Original, where you pretend to be a character in the box picture and complete what they can see; Mystery, where the puzzle picture is the box scene just a few moments later; and
Destiny, where you imagine what the box scene would look like decades into the future.
There's extra hints on the back of the box if you get stuck, and don't worry, they're not too challenging - certainly nobody has (ever!) complained it wasn't fun!