Talk:Equipment/@comment-91.127.34.167-20140824211717/@comment-25174728-20140825200845

I'm not certain, but I believe it is like this:

Most items have random slots (all the monster drops?). In other words, every time you upgrade you can get any slot.

There are however some exceptions. Purchased (and won?) items can have one or more set upgrade slots. For example, I once tried to upgrade eight or nine different Banescale swords. They come with one square slot when you buy them. I didn't want squares, but every time I tried I ended up with either two square slots and a circle, two square slots and a triangle or two square slots and a star. I don't believe that's coincidence.