The whole idea of claiming and carving is pretty fun. I liked being able to explore the pumpkin patch instead of just looking at a normal website. Sometimes I wasn't really sure where to go next after claiming my pumpkin though.
Lots of fun and I can definitely see it growing a lot, it would be great if you could search for a pumpkin name and it would take you to it. Great work on this.
Almost forgot, the idea is great and impl has quite impressive performance (including map mode)