I had the same problem as the previous reviewer, but for some reason it worked after I tried playing for a little longer.
It's a bit rough around the edges, but I quite liked the idea of a Snake with the added mechanic of creating those little lands and populating them as you gather more resources. Not sure where you could go from there though, but I could see the concept working when I saw the rabbit being placed underneath the tree. Really nice idea, good job with the Jam entry!
(Also, I guess it's a debug leftover, but pressing spacebar adds more lands automatically without me needing to get more resources! Just a heads-up in case this was unintentional)