Hunter X Hunter is my favorite series and so it was fun to watch the OVA and revisit the Spiders arc. As I said this is the Spider arc from the series with a little extension on it as well.
Animation was good, had the older feel to it and could tell other than the type of animation style, but also the color choices. Based off how Hisoka look less like a clown in this one with more fleshy tones. Sound was ok, wasn't to thrilled by the opening and ending themes, but they were not disappointing either. If you have not watched some of the series then you would be in confusion of who is who and why, but if you have then there is no explanation needed on anyone.
Overall this is a good one to watch if you just want to relive this arc.