Whether you're interested in anime & manga, comic books/graphic novels and art books, fantasy and sci-fi novels, collecting action figures and statues, board games, tabletop war games or pen & paper role-playing games; this store has it all and then some. Located in downtown Burien across from a bank, the store isn't that large, but is packed from wall to wall, floor to cieling with as much as they can fit.
The casual shopper can find whatever gift or object they'll need easily and if you're a hardcore collector there are some uncommon and probably even rare finds if you look hard enough. And if what you're looking for isn't in the store, just politely ask one of the employees and they'll be able to try and order it for you. Though if it's no longer being produced it will likely take a while to get.
As with most stores of this nature, hours are short. The store is open all week but usually opens at 10 or 11 in the morning and often closes by 6 at night.
The only real downside to the store is that it's packed so full that one can easily get lost. In the back are piles of boxes with labels scribbled on in marker. Older, out of production items may be tucked away in boxes in places hard to get to. You might look for an hour for a rare item and not find it simply because it's put back so deep that you couldn't see it. Making it best to ask if they have what you're looking for if you can't find it on your own.
Overall Wonderworld is arguably the best store of its kind in the region. If you're looking for anything I listed at the beginning and can't find it where you normally look, try Wonderworld, you'll probably find it.