I rewatched the anime recently. I remember loving it when I watched it live and how unique it was. The anime was parodying 2chan and net culture at the time which was unheard of!
But on my rewatch I could only think about how slow it was to actually get into the main plot. And knowing some of the twists made it a bit boring because it's not as in depth as I thought it was. Kinda took a while for me to finish the second time around. I don't really have the motivation to play the Zero version.