Does anybody know why there isn't an iw category, ta

We used to have them, but they were unpopular and arbitrarily defined. They are a good way to practice though, so by all means if you want to practice a world/segment of a category, go for it!

Unfortunately that is the truth, maybe if enough people want it back and people can agree on a decent set of rules it could perhaps make a return. Until then you'll just have to keep your fingers crossed

But remember, just because it's not listed on this website doesn't mean you can't do runs of them yourself!