Like others said, big Dorfromantik vibes. I love that you're given a 'generation option' to work to, but from your other comments it doesn't seem to be much other than a map name; it would be really cool if, say, on the lakes level you got a 2x mod for making lakes (which could be three adjacent water tiles rather than a chain, which is more like a river?). Of course that's way too much to ask for a jam game, but I could definitely see this being expanded that way.
In terms of introducing the concepts to players- obviously part of the game is learning the interactions but for a more chill experience you could definitely make a user/generation guide simlar to that of Terra Nova but visually inspired by the old zoo/rollercoaster tycoon or AoE interfaces that shows example layouts.
Anyways, yeah, cute and well made jam game with lots of potential. Good luck!